The management's discussion and analysis of our financial condition as of
September 30, 2021 and results of operations for the three and nine months ended
September 30, 2021, should be read in conjunction with management's discussion
and analysis of financial condition and results of operations included in our
Annual Report on Form 10-K for the year ended December 31, 2020 which was filed
with the Securities and Exchange Commission, or SEC, on February 25, 2021. Our
discussion includes forward-looking statements based upon current expectations
that involve risks and uncertainties, such as our plans, objectives,
expectations and intentions. Actual results and the timing of events could
differ materially from those anticipated in these forward-looking statements as
a result of a number of factors, including those set forth under the "Business"
section of our Annual Report on Form 10-K and elsewhere in this report and other
reports we file with the SEC. We use words such as "may," "will," "might,"
"could," "would," "should," "expect," "intend," "plan," "anticipate," "believe,"
"estimate," "predict," "project," "aim," "potential," "continue," "ongoing,"
"goal," "forecast," "guidance," "outlook," or the negative of these terms or
other similar expressions to identify forward-looking statements, although not
all forward-looking statements contain these words. All forward-looking
statements included in this report are based on information available to us on
the date hereof and, except as required by law, we assume no obligation to
update any such forward-looking statements. Unless the context requires
otherwise, references in this Quarterly Report on Form 10-Q to "Iovance," "we,"
"us" and "our" refer to Iovance Biotherapeutics, Inc. and our subsidiaries.

Overview



We are a clinical-stage biopharmaceutical company focused on the development and
commercialization of cell therapies as novel cancer immunotherapy products
designed to harness the power of a patient's own immune system to eradicate
cancer cells. Tumor-infiltrating lymphocyte, or TIL, therapy is an autologous,
polyclonal cell therapy platform technology that was originally developed by the
National Cancer Institute, or NCI, which conducted initial clinical trials of
this therapy in diseases such as metastatic melanoma and cervical cancer. We
have developed a new, shorter TIL manufacturing process known as Gen 2, which
yields a cryopreserved TIL product. This centralized, proprietary, and scalable
manufacturing method is being investigated in multiple indications. Our lead
product candidates include lifileucel for metastatic melanoma and metastatic
cervical cancer. In addition to metastatic melanoma and metastatic cervical
cancer, we are investigating the effectiveness and safety of TIL therapy for the
treatment of head and neck squamous cell carcinoma, or HNSCC, non-small cell
lung cancer, or NSCLC. We are investigating peripheral blood lymphocyte, or PBL,
therapy for patients with relapsed or refractory chronic lymphocytic leukemia,
or CLL, and small lymphocytic lymphoma, or SLL, through our sponsored trials. We
are also investigating the potential for TIL therapy in other oncology
indications through academic collaborations with leading cancer research
centers.



Our current product candidate pipeline is summarized in the figure below:



                           [[Image Removed: Graphic]]

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TIL as Monotherapy in Metastatic Solid Tumor Cancers


We have investigated TIL as a monotherapy in metastatic melanoma, cervical
cancer, HNSCC and NSCLC. We are conducting a Phase 2 clinical trial, C-144-01,
of our lead TIL product candidate, lifileucel, for the treatment of metastatic
melanoma. This multicenter pivotal trial enrolled melanoma patients with disease
progression following treatment with at least one systemic therapy, including a
PD-1 inhibitor and, if BRAF mutated, a BRAF inhibitor, or a combination of BRAF
and MEK inhibitors. Cohort 4 of the C-144-01 clinical trial is a single-arm
cohort intended to support a Biologics License Application, or BLA, submission
for lifileucel. Cohorts 2 and 4 of the C-144-01 trial use our Gen 2
manufacturing process. We completed and closed enrollment of patients into
Cohort 2 of the C-144-01 trial in 2018. Results from Cohort 2 of the C-144-01
clinical trial were initially reported at the American Society of Clinical
Oncology, or ASCO, annual meeting on June 1, 2019 and subsequently updated at
the ASCO annual meeting on June 6, 2021. As of the data extract in April 2021,
in 66 patients with metastatic melanoma in Cohort 2, treatment with lifileucel
resulted in an objective response rate, or ORR, of 36%, as assessed by
investigator, with 3 complete responses and 21 partial responses. The disease
control rate, or DCR, was 80.3%. Median duration of response, or DOR, in Cohort
2 had not been reached after 33.1 months of median study follow up. Results from
Cohort 2 presented at ASCO in June 2021 also suggest that early intervention
with lifileucel at the time of initial progression on anti-PD-1 therapy may
maximize benefit. Patients in Cohort 2 were heavily pretreated and had a mean of
3.3 prior therapies. We have previously reported durable responses across a wide
age range of metastatic melanoma patients, among those who have received prior
anti-CTLA-4 and BRAF targeted treatments, regardless of BRAF mutation status,
and in patients with PD-L1 high and low status. The adverse event profile was
generally consistent with the underlying advanced disease and the profile of the
lymphodepletion and IL-2 regimens. In addition, detailed Cohort 2 data was
published in the Journal of Clinical Oncology on May 12, 2021.



Pivotal Cohort 4 of the C-144-01 trial was enrolled to evaluate ORR as read out
by an Independent Review Committee, or IRC, as the primary endpoint based on our
interpretation of discussions with the U.S. Food and Drug Administration, or the
FDA, as part of an End of Phase 2, or EOP2, meeting held with the FDA in the
third quarter of 2018. In October 2018, based on the data provided to the FDA
during the EOP2 meeting, we announced that lifileucel had received a
Regenerative Medicines Advanced Therapy, or RMAT, designation from the FDA.
Enrollment in Cohort 4 of the C-144-01 trial commenced in March 2019 and patient
dosing was completed in January 2020. A total of 87 patients were dosed with Gen
2 product released for Cohort 4. In May 2020, we disclosed initial results from
Cohort 4 for 68 patients with two radiological assessments, as determined by
investigator.



Previously, we reported the submission of additional potency assay data to the
FDA, and at the same time, we also announced that we had reached agreement with
the FDA on the minimum duration of follow up for Cohort 4 to support our BLA
submission for lifileucel in the treatment of metastatic melanoma. In May 2021,
we announced that we had received regulatory feedback from the FDA regarding our
potency assays for lifileucel. Following FDA feedback, we have continued our
ongoing work developing and validating our potency assays and have engaged in
discussions with the FDA during the second half of 2021. Our BLA submission for
lifileucel in metastatic melanoma is expected to occur during the first half of
2022. In connection with this BLA submission, the IRC is expected to
independently assess responses for Cohort 4 patients through the data cut date,
which must be completed prior to BLA submission or disclosure of IRC-read data.



We are also conducting a Phase 2 clinical trial, C-145-04, which is a
multicenter pivotal trial that will assess the safety and efficacy of our lead
product candidate lifileucel for the treatment of patients with recurrent,
metastatic, or persistent cervical cancer. In February 2019, lifileucel received
Fast Track designation from the FDA for development in the treatment of cervical
cancer with disease progression on or after chemotherapy. In March 2019, the
protocol for this trial was amended to modify the primary endpoint of ORR to be
determined by IRC. In May 2019, lifileucel received Breakthrough Therapy
Designation, or BTD, from the FDA for development in the treatment of cervical
cancer. Updated results from the C-145-04 clinical trial were reported at the
ASCO annual meeting on June 1, 2019. In 27 patients with metastatic cervical
cancer, treatment with lifileucel resulted in an ORR of 44%. At the time of the
study data cut, there were 3 complete responses and 9 partial responses. The DCR
was 85%. Patients were heavily pretreated and had a mean of 2.4 prior therapies.
The median DOR had not been reached. The adverse event profile was generally
consistent with the underlying advanced disease and the profile of the
lymphodepletion and IL-2 regimens. In November 2019, we amended the C-145-04
trial to collect additional data on early-line patients as well as late-line
patients by adding additional cohorts, in anticipation of a changing landscape
in this indication, including Cohort 2 for patients that had previously received
anti-PD-1 therapy. These additional cohorts may also allow access to TIL therapy
after completion of the enrollment in the registrational cohorts. In January
2021, we announced that Cohort 2 of the C-145-04 trial had completed enrollment
and that data from this cohort may be supportive of registration because of the
expected changing landscape of care for cervical cancer patients. For example,
the potential shift from chemotherapy in front-line followed by pembrolizumab in
second-line cervical cancer to the use of pembrolizumab in

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combination with chemotherapy in first-line cervical cancer, as well as the
approval of TIVDAK™ in the U.S. for the treatment of adult patients with
recurrent or metastatic cervical cancer with disease progression on or after
chemotherapy. We intend to initiate a dialog with the FDA to discuss these
cohorts and potential BLA submission plans for lifileucel in cervical cancer
after resolution of regulatory discussions regarding our potency assays.



In November 2020, we announced that we had finalized the protocol for our
potential registrational clinical trial in NSCLC, IOV-LUN-202, to investigate
LN-145 in patients with metastatic NSCLC, without driver mutations, who
previously received a single line of approved systemic therapy of combined
checkpoint inhibitor and chemotherapy. The IOV-LUN-202 clinical trial includes
three cohorts. Cohorts 1 and 3 of the IOV-LUN-202 clinical trial are enrolling
patients with a PD-L1 TPS of less than one percent, and Cohort 2 will enroll
patients with a PD-L1 TPS of greater than or equal to one percent. Cohort 3 will
also explore manufacturing TIL extracted from core biopsies using our
third-generation, or Gen 3, manufacturing process. In June 2021, we reported
that the first patient was dosed in the IOV-LUN-202 clinical trial. We intend to
continue to enroll patients in the IOV-LUN-202 clinical trial throughout 2021
and 2022. We also intend to engage in regulatory discussions with the FDA on
LUN-202 and potential registrational trials in NSCLC.



In June 2021, we reported initial data for LN-145 in Cohort 3B of the
IOV-COM-202 clinical trial in metastatic NSCLC. IOV-COM-202 is a Phase 2,
multicenter trial that is composed of seven cohorts that can enroll up to a
total of 135 patients. Cohort 3B of IOV-COM-202 enrolled patients with
metastatic NSCLC that had progressed on prior immune checkpoint inhibitor
therapy, including patients with oncogene-driven tumors who received prior
tyrosine kinase inhibitor therapy. Patients were treated with LN-145
monotherapy. We reported results from Cohort 3B of the IOV-COM-202 trial, as
follows. The ORR was 21.4% for the 28 patients that participated in the trial,
including one complete response and five partial responses, and the DCR was
64.3%, including two responders with PD-L1 negative tumors. Median DOR was not
reached at a median study follow up of 8.2 months. The treatment-emergent
adverse event profile was consistent with the underlying disease and known
adverse event profiles of non-myeloablative lymphodepletion and IL-2. All
patients treated in Cohort 3B of the IOV-COM-202 trial received prior
anti-PD-1/L1 therapy and all six responding patients also received prior
chemotherapy. Historically, ORRs of approximately 20% were reported with ICIs as
second-line therapy in ICI-naïve patients who progressed on front-line
chemotherapy. We intend to provide an update on Cohort 3B at the Society for
Immunotherapy in Cancer, or SITC, meeting in November 2021.



C-145-03 is our Phase 2, multicenter trial to assess the safety and efficacy of
our product candidate LN-145 for the treatment of patients with metastatic
HNSCC. In October 2018, we reported that, to date, preliminary data for 13
patients in the C-145-03 clinical trial yielded an ORR of 31% with a DOR ranging
from 2.8 to 7.6 months. The adverse event profile remained consistent with
previous reports. We redesigned our C-145-03 trial to include multiple cohorts,
in order to allow for dosing of TIL therapies produced by multiple manufacturing
methods, including our Gen 2 manufacturing process, our Gen 3 manufacturing
process, and our PD-1 selected TIL manufacturing process. Our PD-1 selected TIL
manufacturing process results in a product that we refer to as LN-145-S1. In
January 2021, we announced that we are closing the C-145-03 clinical trial after
the trial reached its pre-specified enrollment target.



TIL Combinations in Earlier Treatment Settings for Solid Tumors





We are also investigating the potential of our TIL therapies in earlier lines of
treatment in combination with pembrolizumab or other agents in cancer patients
who are naïve to anti-PD-1 therapy, including in four cohorts in our IOV-COM-202
study in solid tumors as well as in one cohort in our C-145-04 clinical study in
cervical cancer.



In May 2019, we reported that the first patient was dosed in the IOV-COM-202
trial. In addition to its ongoing enrollment in the U.S., the IOV-COM-202 trial
has also received regulatory approval in Canada and in certain European
countries. In September 2021, we announced that our the iCTC had successfully
manufactured and delivered the first clinical batch of LN-145 for the
IOV-COM-202 trial.



There are four TIL combination cohorts in the IOV-COM-202 study. In Cohort 1A,
we are enrolling advanced unresectable or metastatic melanoma patients who are
naïve to anti-PD-1 therapy. We reported results from ongoing Cohort 1A of the
IOV-COM-202 trial at the ASCO meeting in June 2021, as follows. Seven patients
received lifileucel in combination with pembrolizumab. Six of the seven patients
had a confirmed objective response, with an ORR of 86%, including two complete
responses, one unconfirmed complete response who had not yet reached the
confirmatory complete response assessment, and three partial responses, with one
best response of stable disease. The complete response rate, including the
unconfirmed complete response, was 43%. The median follow up was 8.2 months. The
Cohort 1A results also demonstrated that lifileucel can be safely combined

with
pembrolizumab.



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In Cohort 2A of the IOV-COM-202 trial, we are enrolling advanced, recurrent, or
metastatic HNSCC patients who are naïve to prior immunotherapy including
anti-PD-1/anti-PD-L1 therapy. The patients receive LN-145 in combination with
pembrolizumab. We reported results from ongoing Cohort 2A of the IOV-COM-202
trial at the SITC meeting in November 2020, as follows. As of October 16, 2020,
nine HNSCC patients have received LN-145 plus pembrolizumab with a median
duration of follow up of 8.6 months. Nine and eight patients were evaluable for
safety and efficacy, respectively. Four patients had a confirmed, objective
response with an ORR of 44% including one complete response and three partial
responses. Median DOR was not reached. The DCR at data cutoff was 89% in nine
patients, and seven of the eight evaluable patients, or 87.5%, had a reduction
in target lesions. The median number of prior therapies was 1.0 with 89% of the
patients having received prior chemotherapy. Four patients were positive for
Human Papilloma Virus, or HPV, three patients were HPV negative, and two
patients had unknown HPV status.



The Cohort 1A and Cohort 2A results from the IOV-COM-202 study demonstrated that
lifileucel or LN-145 can be safely combined with pembrolizumab. The treatment
emergent adverse event, or TEAE, profile in both Cohorts was consistent with the
underlying advanced disease and the known adverse event profiles of
pembrolizumab, lymphodepletion, and IL-2 regimens.



Cohort 3A and 3C in the IOV-COM-202 study include LN-145 combinations in NSCLC.
Cohort 3A is evaluating LN-145 in combination with pembrolizumab in patients
with recurrent or metastatic NSCLC who have not received prior immunotherapy,
including checkpoint inhibitors. Cohort 3C is investigating LN-145 therapy in
combination with ipilimumab and nivolumab in patients with recurrent or
metastatic NSCLC who have previously received one line of approved checkpoint
inhibitor monotherapy as the only prior line of systemic therapy.



Next-Generation Product Candidates


Our clinical pipeline also includes next generation TIL product candidates and
manufacturing processes. Our TIL candidate LN-145-S1, in which specific TIL are
selected for PD-1 expression, is being investigated in post-anti-PD-1 melanoma
Cohort 1B in the IOV-COM-202 basket study as well Cohort 4 in post-anti-PD-1
HNSCC in the C-145-03 trial in HNSCC.



We are using our Gen 3 manufacturing process in Cohort 1C of the IOV-COM-202
clinical trial in melanoma and in Cohort 3 of the IOV-LUN-202 clinical trial in
NSCLC and have previously used it in the C-145-03 clinical trial in HNSCC.



In November 2019, we announced that our Investigational New Drug, or IND,
application for our PBL therapy, IOV-2001, was authorized by the FDA and our
sponsored clinical trial using this therapy, IOV-CLL-01, was cleared to proceed.
IOV-2001 is a non-genetically modified, polyclonal T cell product that is
manufactured using a nine-day process from 50 mL of patient's blood. IOV-CLL-01
is a Phase 1/2 clinical trial evaluating the safety and efficacy of IOV-2001 in
patients with relapsed or refractory CLL or SLL. The IOV-CLL-01 trial is
expected to enroll up to approximately 70 patients.



In addition, we are nearing completion of IND-enabling studies for our lead genetically modified TIL product candidate, IOV-4001, in which the gene coding for the PD-1 protein is inactivated, as well as our novel IL-2 analog, IOV-3001.





Investigator-Sponsored Trials



Through our academic collaborators, we are also exploring the potential for TIL
therapies in additional indications. As part of our collaboration program with
M.D. Anderson Cancer Center, or MDACC, two Phase 2 trials were initiated in
2018. Both trials are sponsored by MDACC. The first trial, NCT03449108, is
intended to allow for investigation of LN-145 manufactured by us, using our
manufacturing processes, to treat patients with soft tissue sarcoma,
osteosarcoma, platinum resistant ovarian cancer, and thyroid cancer. A second
trial under the collaboration with MDACC, NCT03610490, was previously active.
This trial treated patients with platinum resistant ovarian cancer, pancreatic
and colorectal cancer with TIL manufactured by MDACC. The data obtained using
this manufacturing process may not be representative of our data using our

Gen 2
manufacturing process.



We are also collaborating with Centre hospitalier de l'Université de Montreal,
or CHUM, Yale University, and Moffitt on investigator-sponsored clinical trials
of TIL therapies in other indications. The clinical trials sponsored by CHUM and
Moffitt use, or will use, TIL manufactured by different manufacturing processes,
which may not be representative of our data using our Gen 2 manufacturing
process.



We currently own more than 30 U.S. patents related to TIL therapy, including
patents directed to compositions and methods of treatment in a broad range of
cancers, such as U.S. Patent Nos. 10,130,659; 10,166,257; 10,272,113;
10,363,273; 10,398,734;

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10,420,799; 10,463,697; 10,517,894; 10,537,595; 10,639,330; 10,646,517;
10,653,723; 10,695,372; 10,894,063; 10,905,718; 10,918,666; 10,925,900;
10,933,094; 10,946,044; 10,946,045; 10,953,046; 10,953,047; 11,007,225;
11,007,226; 11,013,770; 11,026,974; 11,040,070; 11,052,115; 11,052,116;
11,058,728; 11,083,752; 11,123,371; and 11,141,438. More than 25 of these
patents are related to our Gen 2 manufacturing processes and have terms that we
anticipate will extend to January 2038, not including any patent term extensions
or adjustments that may be available. Our owned and licensed intellectual
property portfolio also includes patent applications and patents relating to
TIL, marrow infiltrating lymphocyte, or MIL, and PBL therapies; frozen
tumor-based TIL technologies; remnant TIL and digest TIL compositions, methods
and processes; methods of treatment of a broad range of cancers using TIL
therapies; methods of manufacturing TIL, MIL, and PBL therapies; the use of
costimulatory molecules in TIL therapy and manufacturing; stable and transient
genetically-modified TIL therapies; methods of using immune checkpoint
inhibitors in combination with TIL therapies; TIL selection technologies; and
methods of treating patient subpopulations.



In January 2020, we obtained a license from Novartis to develop and
commercialize an antibody cytokine engrafted protein, which we refer to as
IOV-3001. Under the agreement, we paid an upfront payment to Novartis and may
pay milestones involved in initiation of patient dosing in various phases of
clinical development for IOV-3001 and approval of a potential product in the
U.S., EU, and Japan. Novartis is also entitled to low-to-mid single digit
percentage royalties from commercial sales of IOV-3001. In addition, in January
2020, we announced a research collaboration and exclusive worldwide licensing
agreement with Cellectis S.A., or Cellectis, a clinical-stage biopharmaceutical
company focused on developing immunotherapies based on gene-edited allogeneic
chimeric antigen receptor modified T cells, whereby we licensed certain TALEN
technology from Cellectis to develop TIL that have been genetically edited to
create potentially more potent cancer therapeutics. The worldwide exclusive
license enables us to use TALEN technology addressing multiple gene targets to
modify TIL for therapeutic use in several cancer indications. Financial terms of
the license include development, regulatory and sales milestone payments from us
to Cellectis, as well as royalty payments based on net sales of TALEN-modified
TIL products.


Components of Operating Results

Revenue



We have not yet generated any revenues since our formation, and we currently do
not anticipate that we will generate any significant revenues from the sale or
licensing of our product candidates during the 12 months from the date these
financial statements are issued. Our ability to generate revenues in the future
will depend on our ability to complete the development of our product candidates
and to obtain regulatory approval for them.

Research and Development Expenses



Research and development expenses include personnel and facility-related
expenses, outside contracted services including clinical trial costs,
manufacturing and process development costs, research costs and other consulting
services. Research and development costs are expensed as incurred. Nonrefundable
advance payments for goods or services that will be used or rendered for future
research and development activities are deferred and amortized over the period
that the goods are delivered, or the related services are performed, subject to
an assessment of recoverability.

Clinical development costs are a significant component of research and
development expenses. We have a history of contracting with third parties that
perform various clinical trial activities on our behalf in connection with the
ongoing development of our product candidates. The financial terms of these
contracts are subject to negotiations and may vary from contract to contract and
may result in uneven payment flow. We accrue and expense costs for clinical
trial activities performed by third parties based upon estimates of work
completed to date of the individual trial in accordance with agreements
established with contract research organizations and clinical trial sites. We
determine our estimates through discussions with internal clinical personnel and
outside service providers as to the progress or stage of completion of trials or
services and the agreed upon fee to be paid for such services.

We expect our research and development expenses to continue to increase as we
prepare for commercial manufacturing of our products and continue to conduct our
clinical trials for other indications. However, it is difficult to determine
with certainty the duration and completion costs of our current or future
preclinical programs and clinical trials of our product candidates.

General and Administrative Expenses

General and administrative expenses consist primarily of salaries and other related costs, including stock-based compensation, for personnel in executive, finance, accounting, legal, investor relations, facilities, business development, marketing, commercial,



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information technology and human resources functions. Other significant costs
include facility costs not otherwise included in research and development
expenses, legal fees relating to corporate matters and intellectual property,
insurance, public company expenses relating to maintaining compliance with
Nasdaq listing rules and SEC requirements, investor relations costs, and fees
for accounting and consulting services. General and administrative costs are
expensed as incurred, and we accrue for services provided by third parties
related to the above expenses by monitoring the status of services provided and
receiving estimates from its service providers and adjusting its accruals as
actual costs become known.

We anticipate general and administrative expenses will increase as we continue
to prepare for commercialization and support an expected growth of the internal
general and administrative team.

Interest Income, Net

Interest income, net results from our interest-bearing cash and investment balances.

Results of Operations

Comparison of the Three and Nine Months Ended September 30, 2021 and 2020

Revenues

We did not generate any revenues during the three and nine months ended September 30, 2021 or September 30, 2020.

Research and Development expenses (in thousands)






                                Three Months Ended        Increase /          Nine Months Ended         Increase /
                                  September 30,           (Decrease)            September 30,           (Decrease)
                                 2021         2020         $         %        2021         2020          $        %
Research and development      $   65,355    $ 43,050      22,305     52 %   $ 183,423    $ 149,276      34,147    23 %
Stock-based compensation
expense included in
research and development
expense                           11,504       5,282       6,222    118 %      29,291       15,065      14,226    94 %




Research and development expense for the three months ended September 30, 2021
increased by $22.3 million, or 52%, compared to the same period in 2020. The
increase was primarily attributable to (i) $6.2 million of stock-based
compensation expenses and a $5.4 million increase in payroll and related
expenses, both driven by increased hiring of research and development employees
to support our on-going and planned clinical development activities, (ii) a $5.0
million increase in clinical trial costs due to continued enrollment in our
IOV-COM-202 clinical trial and initiation of IOV-LUN-202 clinical trial, (iii) a
$4.6 million increase in costs associated with the iCTC such as rent,
depreciation and lab maintenance related expenses, and (iv) a $1.1 million
increase in other costs, including manufacturing, insurance, and travel
expenses.

Research and development expense for the nine months ended September 30, 2021
increased by $34.1 million, or 23%, compared to the same period in 2020. The
increase was primarily attributable to (i) a $19.5 million increase in payroll
and related expenses and, a $14.2 million increase in stock-based compensation
expenses, both driven by increased hiring of research and development employees
to support our on-going and planned clinical development activities, (ii) a $8.8
million increase in costs associated with the iCTC, (iii) a $1.6 million
increase in clinical trial costs, and (iv) a $2.4 million increase in
consumables and other costs, including allocated costs associated with the
build-out of our IT infrastructure to further support the growth in the
organization and infrastructure associated with our clinical trials. These
increases were partially offset by a $10.9 million decrease in research alliance
costs primarily due to a license fee from Novartis to further develop IOV-3001
which was recognized in full in January 2020, and a $1.5 million decrease in
manufacturing costs.

General and Administrative expenses (in thousands)






                                 Three Months Ended        Increase /         Nine Months Ended        Increase /
                                   September 30,           (Decrease)          September 30,           (Decrease)
                                  2021         2020         $        %        2021         2020         $         %

General and administrative     $   20,887    $ 15,916      4,971     31 %   $  59,815    $ 44,127      15,688     36 %
Stock-based compensation
expense included in general
and administrative expense          7,802       5,424      2,378     44 %  

   21,370      15,590       5,780     37 %




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General and administrative expenses for the three months ended September 30,
2021 increased by $5.0 million, or 31%, compared to the same period in 2020. The
increase was primarily attributable to (i) a $2.3 million increase in payroll
and related expenses and a $2.4 million increase in stock-based compensation
expenses, both resulting from increases in headcount to support the growth in
the overall business and related corporate infrastructure, and (ii) a $1.3
million increase in other costs, including insurance and costs associated with
the build-out of our IT infrastructure. These costs were partially offset by a
$1.0 million decrease in commercial and marketing costs due to reprioritization
of corporate initiatives.

General and administrative expenses for the nine months ended September 30, 2021
increased by $15.7 million, or 36%, compared to the same period in 2020. The
increase was primarily attributable to (i) a $7.0 million increase in payroll
and related expenses and a $5.8 million increase in stock-based compensation
expenses, both resulting from increases in headcount to support the growth in
the overall business and related corporate infrastructure, and (ii) a $3.0
million increase in insurance and intellectual property filing related costs,
and iv) a $1.4 million increase in other costs, including professional fees and
costs associated with the build-out of our IT infrastructure to support the
continued growth in the overall company. These costs were partially offset by a
$1.5 million decrease in commercial and marketing costs due to reprioritization
of corporate initiatives.

Interest income, net (in thousands)






                                 Three Months Ended         Increase /        Nine Months Ended         Increase /
                                   September 30,            (Decrease)         September 30,            (Decrease)
                                2021           2020          $        %       2021         2020          $         %
Interest income, net          $     120      $     395      (275)    (70) % $    316     $  2,219      (1,903)    (86) %




Interest income, net for the three and nine months ended September 30, 2021 and
2020 decreased by $0.3 million, or 70%, and $1.9 million, or 86%, respectively,
due primarily to declining interest rates and lower interest received on our
cash, cash equivalents and investment portfolio.

Net Loss (in thousands)




                                Three Months Ended          Increase /             Nine Months Ended            Increase /
                                  September 30,             (Decrease)               September 30,              (Decrease)
                                2021          2020           $          %         2021           2020            $          %
Net loss                     $ (86,122)    $ (58,571)      (27,551)     47

%   $ (242,922)    $ (191,184)      (51,738)     27 %




Net loss for the three and nine months ended September 30, 2021 increased by
$27.6 million or 47% and $51.7 million or 27%, respectively, compared to the
same periods in 2020. The increase in our net loss was due to the continued
expansion of our research and development activities and the overall growth of
our corporate infrastructure. We anticipate that we will continue to incur net
losses in the future as we further invest in our research and development
activities and commercial preparation activities.

Liquidity and Capital Resources



We have incurred net losses and generated negative cash flows from operations
since inception. We expect to continue to incur significant losses in 2021 and
may incur significant losses and negative cash flows from operations for the
foreseeable future. Historically, we have funded our operations from various
public and private offerings of our equity securities (both common stock and
preferred stock), from option and warrant exercises, and from interest income.
Since 2017, our primary source of funds has been from the public sale of our
common stock.

Corporate Capitalization

As of September 30, 2021, we had outstanding 156,702,653 shares of our
$0.000041666 par value common stock, 194 shares of our $0.001 par value Series A
Convertible Preferred Stock, and 2,842,158 shares of our $0.001 par value Series
B Convertible Preferred Stock. The outstanding shares of Series A Convertible
Preferred Stock are currently convertible into 97,000 shares of our common
stock, and the outstanding shares of Series B Convertible Preferred Stock are
currently convertible into 2,842,158 shares of our common stock. The shares of
Series A Convertible Preferred Stock and Series B Convertible Preferred Stock do
not have voting rights or accrue dividends.

On December 28, 2017, we filed a shelf registration statement with the SEC for
the issuance of common stock, preferred stock, warrants, rights, debt securities
and units up to an aggregate amount of $250 million, which we refer to as the
2017 Shelf Registration Statement. The 2017 Shelf Registration Statement was
declared effective on January 19, 2018. On January 29, 2018, we sold

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15,000,000 shares of our common stock at a public offering price of $11.50 per
share pursuant to the 2017 Shelf Registration Statement. We received gross
proceeds of approximately $172.5 million and net proceeds of approximately
$162.0 million, after deducting underwriting discounts and offering expenses.
The 2017 Shelf Registration Statement was terminated upon effectiveness of the
2018 Shelf Registration Statement (as discussed below).



On September 7, 2018, we filed a shelf registration statement with the SEC for
the issuance of common stock, preferred stock, warrants, rights, debt securities
and units up to an aggregate amount of $250 million, which we refer to as the
2018 Shelf Registration Statement. The 2018 Shelf Registration Statement was
declared effective on October 3, 2018 and the aggregate amount of securities we
could issue thereunder was subsequently increased by $50 million through a
post-effective amendment that we filed on October 11, 2018, pursuant to Rule
462(b) of the Securities Act. On October 17, 2018, we sold 25,300,000 shares of
our common stock at a public offering price of $9.97 per share pursuant to the
2018 Shelf Registration Statement. We received gross proceeds of approximately
$252.2 million and net proceeds of $236.7 million, after deducting underwriting
discounts and offering expenses. The 2018 Shelf Registration Statement is no
longer available for future offerings.



On September 17, 2019, we filed a shelf registration statement with the SEC for
the issuance up to an aggregate amount of $400 million, which we refer to as the
2019 Shelf Registration Statement. The 2019 Shelf Registration Statement was
declared effective on September 24, 2019. The 2019 Shelf Registration Statement
was terminated upon effectiveness of the 2020 Automatic Shelf Registration
Statement (as discussed below). No shares were sold under the 2019 Shelf
Registration Statement prior to its termination.



On May 27, 2020, we filed an automatic shelf registration statement with the SEC
for the issuance of an indeterminate amount of Shelf Securities, which we refer
to as the 2020 Automatic Shelf Registration Statement. The 2020 Automatic Shelf
Registration Statement was immediately effective upon filing with the SEC, and
the 2019 Shelf Registration Statement was simultaneously terminated.



On June 2, 2020, we sold 19,475,806 shares of our common stock at a public
offering price of $31.00 per share pursuant to the 2020 Automatic Shelf
Registration Statement. We received gross proceeds of $603.7 million and net
proceeds of $567.0 million, after deducting underwriting discounts and offering
expenses. Following the public offering, the 2020 Automatic Shelf Registration
Statement remains available for the future issuance of an indeterminate amount
of Shelf Securities.



On February 8, 2021, we entered into an Open Market Sale Agreement, or the Sales
Agreement, with Jefferies LLC, or Jefferies, with respect to an "at the market"
offering program, under which we may, from time to time, in our sole discretion,
issue and sell through Jefferies, acting as sales agent, up to $350.0 million of
shares of our common stock. The issuance and sale, if any, of shares of our
common stock under the Sales Agreement will be made pursuant to a prospectus
supplement, dated February 8, 2021, to the 2020 Automatic Shelf Registration
Statement. For the nine months ended September 30, 2021, we received
approximately $203.2 million in net proceeds through the sale of
6,474,099 shares of our common stock. There were no sales of our common stock
through the Sales Agreement for the three months ended September 30, 2021.

In the future, we may periodically offer one or more of these securities in
amounts, prices, and terms to be announced when and if the securities are
offered. If any of the securities covered by the 2020 Automatic Shelf
Registration Statement are offered for sale, a prospectus supplement will be
prepared and filed with the SEC containing specific information about the terms
of such offering at that time.



We are currently engaged in the development of therapeutics to fight cancer. We
do not have any commercial products and have not yet generated any revenues from
our biopharmaceutical business. We currently do not anticipate that we will
generate any significant revenues from the sale or licensing of any products
during the 12 months from the date these financial statements are issued. We
have incurred a net loss of $242.9 million for the nine months ended September
30, 2021 and used $174.1 million of cash in our operating activities for the
same period ended September 30, 2021. As of September 30, 2021, we had $58.6
million of cash, cash equivalents, $596.1 million of investments ($517.9 million
of short-term investments and $78.2 million of long-term investments), $698.3
million of stockholders' equity and had working capital of $518.3 million.



We expect to increase our research and development activities and pre-commercial
activities, which will increase the amount of cash we will use during the
remainder of 2021 and beyond. Based on the funds we have available as of the
date of the filing of this Quarterly Report on Form 10-Q, we believe that we
have sufficient capital to fund our anticipated operating expenses and capital
expenditure for at least 12 months from the date of filing this report.



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Cash Flows


The following table summarizes our cash flows for the periods presented from Operating, Investing and Financing Activities (in thousands):






                                                                  Nine Months Ended September 30,
                                                                     2021                  2020
Net cash (used in) provided by:
Operating activities                                           $       (174,092)     $       (142,442)
Investing activities                                                    (69,206)             (376,606)
Financing activities                                                     235,118               573,464

Net increase in cash, cash equivalents and restricted cash $ (8,180) $ 54,416






Operating Activities

Net cash used in operating activities for the nine months ended September 30,
2021 was $174.1 million compared to $142.4 million for the same period in 2020.
The increase of $31.7 million was primarily due to an increase in net loss
driven by increased costs in research and development and pre-commercial
activities.

Investing Activities



Net cash used by investing activities for periods presented primarily relate to
the purchase and maturity of investments used to fund the day-to-day needs of
our business. Net cash used by investing activities for the nine months ended
September 30, 2021 was $69.2 million compared to net cash used of $376.6 million
for the same period in 2020. The decrease in cash provided by investing
activities of $307.4 million was primarily due to the timing of maturities

and
purchases of investments.

Financing Activities

Net cash provided by financing activities for the nine months ended September
30, 2021 was $235.1 million compared to $573.5 million for the same period in
2020. The decrease of $338.3 million was primarily due to net proceeds of $567.0
million received from our June 2020 public offering as compared to net proceeds
of $203.2 million received from sales of common shares through the "at the
market" offering program during the nine months ended September 30, 2021. The
decrease in net proceeds from sales of our common stock in the nine months ended
September 30, 2021 as compared to September 30, 2021 was offset by an increase
of $24.3 million in proceeds from exercises of stock options during the nine
months ended September 30, 2021.

Impact of COVID-19 on our Business

Operations and Liquidity



The full impact of the COVID-19 pandemic is unknown and rapidly evolving. While
the potential economic impact brought by and over the duration of the COVID-19
pandemic may be difficult to assess or predict, the COVID-19 pandemic has
resulted in significant disruption of global financial markets, which could in
the future negatively affect our liquidity. In addition, a recession or market
volatility resulting from the COVID-19 pandemic could affect our business. We
have taken proactive, aggressive action throughout the COVID-19 pandemic to
protect the health and safety of our employees and expect to continue to
implement these measures until we determine that the COVID-19 pandemic is
adequately contained for purposes of our business. We may take further actions
as government authorities require or recommend or as we determine to be in the
best interests of our employees. We do not believe that the COVID-19 pandemic
had a material impact on our liquidity or results of operations for the year
ended December 31, 2020. Further, to date, the COVID-19 pandemic has not had
significant effects on our clinical trial enrollment. Given the nature and type
of our short-term investments in U.S. government securities, we do not believe
that the COVID-19 pandemic will have a material impact on our current investment
liquidity.

Outlook

Although there is uncertainty related to the anticipated impact of the recent
COVID-19 pandemic on our future results, we believe our current cash reserves
leave us well-positioned to manage our business through this crisis as it
continues to unfold. However, the impacts of the COVID-19 pandemic are
broad-reaching and continuing and the financial impacts associated with the
COVID-19 pandemic are still uncertain.

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The COVID-19 pandemic is ongoing, and its dynamic nature, including
uncertainties relating to the ultimate geographic spread of the virus, the
severity of the disease, the duration of the pandemic, and actions that would be
taken by governmental authorities to contain the pandemic or to treat its
impact, makes it difficult to forecast any effects on our results for the three
and nine months ended September 30, 2021.

Despite the economic uncertainty resulting from the COVID-19 pandemic, we intend
to continue to focus on the development of our product candidates. We continue
to monitor the rapidly evolving situation and guidance from international and
domestic authorities, including federal, state, and local public health
authorities and may take additional actions based on their recommendations. In
these circumstances, there may be developments outside our control requiring us
to adjust our operating plan. As such, given the dynamic nature of this
situation, we cannot reasonably estimate the impacts of COVID-19 on our
financial condition, results of operations or cash flows in the future.

Off-Balance Sheet Arrangements

As of September 30, 2021, we had no obligations that would require disclosure as off-balance sheet arrangements.

Significant Accounting Policies and Recent Accounting Standards

See Note 2 of the financial statements for a discussion of our significant accounting policies, including the discussion of recently issued and adopted accounting standards.



Inflation

Inflation has not had a material effect on our business, financial condition, or results of operations over our two most recent fiscal years.

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