The following discussion and analysis of our financial condition and results of
operations should be read in conjunction with our unaudited financial statements
and related notes appearing elsewhere in this Quarterly Report on Form 10-Q and
the audited financial information and the notes thereto included in our Annual
Report on Form 10-K for the year ended December 31, 2019 that we filed with the
Securities and Exchange Commission, or SEC, on March 5, 2020, or the 2019
10-K. Our actual results and timing of certain events may differ materially from
the results discussed, projected, anticipated, or indicated in any
forward-looking statements. We caution you that forward-looking statements are
not guarantees of future performance and that our actual results of operations,
financial condition and liquidity, and the development of the industry in which
we operate, may differ materially from the forward-looking statements contained
in this Quarterly Report. In addition, even if our results of operations,
financial condition and liquidity, and the development of the industry in which
we operate are consistent with the forward-looking statements contained in this
Quarterly Report, they may not be predictive of results or developments in
future periods.

The following information and any forward-looking statements should also be
considered in light of risks identified under the caption "Risk Factors" in the
2019 10-K and in this Quarterly Report on Form 10-Q. We caution you not to place
undue reliance on any forward-looking statements made by us, which speak only as
of the date they are made. We disclaim any obligation, except as specifically
required by law and the rules of the SEC, to publicly update or revise any such
statements to reflect any change in our expectations or in events, conditions or
circumstances on which any such statements may be based, or that may affect the
likelihood that actual results will differ from those set forth in the
forward-looking statements.

Overview



We are a biopharmaceutical company seeking to redefine the power of small
molecules to control the expression of genes. Based on our unique ability to
elucidate regulatory regions of the genome, we aim to develop medicines that
provide a profound benefit for patients with diseases that have eluded other
genomics-based approaches. We are currently focused on developing treatments for
cancer and diseases resulting from mutations of a single gene, also known as
monogenic diseases, and building a pipeline of gene control medicines.

Our lead product candidates are:

• SY-1425, a selective retinoic acid receptor alpha, or RAR?, agonist


           that is currently being evaluated in combination with 

azacitidine, a


           hypomethylating agent frequently used to treat acute myeloid 

leukemia,


           or AML, in patients in a Phase 2 clinical trial in a genomically
           defined subset of patients with AML; and




      •    SY-5609, a highly selective and potent oral inhibitor of
           cyclin-dependent kinase 7, or CDK7, that is currently being

evaluated


           in the dose escalation portion of a Phase 1 clinical trial in 

patients


           with select advanced solid tumors.






In October 2019, we announced a decision to prioritize the development of
SY-5609 and to discontinue further development of SY-1365, our intravenously
administered CDK7 inhibitor for which we are conducting a Phase 1 clinical trial
in patients with advanced solid tumors.

We also have multiple preclinical and discovery programs in oncology and
monogenic diseases such as sickle cell disease and myotonic dystrophy type 1. We
expect to nominate our next development candidate to enter investigational new
drug application, or IND, enabling preclinical studies by the end of 2021. In
December 2019, we entered into a collaboration with Global Blood Therapeutics,
Inc., or GBT, to discover, develop and commercialize novel therapies for sickle
cell disease and beta thalassemia. We also use our gene control platform in
collaboration with third parties to identify and validate targets in diseases
beyond our current areas of focus. To this end, we entered into a target
discovery, research collaboration and option agreement with Incyte Corporation,
or Incyte, in January 2018 under which we are using our platform to identify
novel therapeutic targets with a focus on myeloproliferative neoplasms.

Our ongoing Phase 2 clinical trial is assessing the safety and efficacy of
SY-1425 in combination with azacitidine in approximately 50 newly diagnosed AML
patients who are "unfit," meaning that they are not suitable candidates for
standard intensive chemotherapy, who have been identified as either
RARA-positive or RARA-negative using our proprietary RARA biomarker. The
RARA-negative patients were enrolled to support the development of a commercial
companion diagnostic test for SY-1425. In addition, we are evaluating the safety
and efficacy of SY-1425 in combination with azacitidine in approximately 25
relapsed or refractory RARA-positive AML patients who are being prospectively

                                       28

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selected using the RARA biomarker. Enrollment in all cohorts of the trial is
complete and we continue to follow patients in the trial. We expect to report
mature data from the newly diagnosed AML cohorts of the trial, as well as data
from the ongoing relapsed or refractory AML cohort of the trial and our future
development plans for SY-1425, at the 62nd American Society of Hematology Annual
Meeting and Exposition to be held in December 2020 ("ASH 2020"). Also at ASH
2020, we plan to present a poster with new data showing that the majority
of RARA-positive patients have a disease phenotype that is associated with
resistance to upfront treatment with venetoclax.



In January 2020, we dosed the first patient in a Phase 1 clinical trial of
SY-5609 in patients with select advanced solid tumors, including breast,
colorectal, lung, ovarian and pancreatic cancers, and in solid tumors of any
histology having retinoblastoma-pathway, or Rb pathway, alterations. The primary
objectives of this trial are to assess the safety and tolerability of escalating
doses of SY-5609, with the goal of establishing a maximum tolerated dose.
Additional objectives include assessments of anti-tumor activity,
pharmacokinetics (PK), pharmacodynamics (PD) and potential predictive
biomarkers, including Rb pathway alterations. In a future expansion portion of
the Phase 1 trial, multiple cohorts are planned to further evaluate the safety
and anti-tumor activity of SY-5609 as both a single agent and in combination
with other therapies. In this regard, in June 2020, we began enrolling patients
in a trial cohort assessing the safety of escalating doses of SY-5609 in
combination with fulvestrant in HR-positive/HER2-negative metastatic breast
cancer patients who have progressed after treatment with a CDK4/6 inhibitor.

At the 32nd EORTC-NCI-AACR Molecular Targets and Cancer Therapeutics Symposium
held in October 2020, or ENA, we reported initial safety, PK, and PD data from
the ongoing Phase 1 study of SY-5609. These data demonstrated proof of mechanism
and support our ongoing development of SY-5609 for difficult-to-treat cancers.
As of an August 21, 2020 data cut-off, 17 patients had been enrolled in the
trial and were eligible for safety, PK and PD analysis. Patients were either
treated with continuous daily dosing of single-agent SY-5609 at 1, 3, 4 or 5 mg,
or for three weeks on and one week off at 3 mg in combination with fulvestrant.
The maximum tolerated dose for continuous daily dosing was achieved at 3 mg. The
data showed that SY-5609 demonstrated dose-dependent increases in POLR2A mRNA
expression, a PD marker being used in the trial to measure CDK7 biological
activity. Notably, increases in POLR2A in patients treated at 3 mg daily reached
levels associated with tumor regressions in preclinical models, as well as with
levels of CDK7 target engagement at which a clinical response and apoptosis were
observed in a trial of patients treated with SY-1365. SY-5609 demonstrated
approximately dose-proportional PK as both a single agent and in combination,
minimal accumulation with repeat dosing, and a steady state half-life compatible
with once-daily dosing. The majority of adverse events reported with SY-5609 as
a single agent were low grade. The most common adverse events were nausea,
diarrhea, fatigue, platelet count decrease, and vomiting. The safety profile of
SY-5609 in combination with fulvestrant was consistent with that of single-agent
SY-5609. Five of the 13 patients treated with single-agent SY-5609 were response
evaluable, and of those, three achieved stable disease and two had progressive
disease; one of the four patients treated in the combination cohort was response
evaluable and had progressive disease. The Phase 1 trial continues to actively
enroll patients with select solid tumors, including an expanded single-agent
cohort in lung cancer patients that began in September 2020 and the combination
cohort in breast cancer patients, to further evaluate the 3 mg daily dose in
focused patient populations. Alternate dosing regimens are also being explored
in the trial. We also expect to report additional dose escalation data,
including clinical activity data, in mid-2021.

Since our inception in November 2011, we have devoted substantially all of our
resources to organizing and staffing our company, business planning, raising
capital, developing our technology platform and conducting preclinical research
and clinical development for our product candidates. We do not have any products
approved for sale and have not generated any revenue from product sales. We have
financed our operations to date primarily through the sale of equity securities,
license and collaboration agreements, and our term loan with Oxford Finance LLC,
or Oxford. From inception through September 30, 2020, we raised an aggregate of
$390.7 million from such transactions, including aggregate proceeds of $20.0
million through our draw down on the first tranche of our term loan with Oxford
in February 2020 and $12.3 million in proceeds from the sale of common stock
under our at-the-market sales facility during the first quarter of 2020.

Since inception, we have incurred significant operating losses. Our net losses
were $53.9 million and $55.7 million for the nine months ended
September 30, 2020 and 2019, respectively. As of September 30, 2020, we had an
accumulated deficit of $346.9 million. We expect to continue to incur
significant expenses and operating losses for the foreseeable future. We
anticipate that our expenses will increase significantly in connection with our
ongoing activities, as we:

• continue our planned clinical development activities with respect to


           SY-1425 and SY-5609;


                                       29

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      •    develop and seek approval of companion diagnostic tests for use in
           identifying patients who may benefit from treatment with our products
           and product candidates;

• initiate and continue research, preclinical and clinical development


           efforts for our research and preclinical programs;


  • further develop our gene control platform;


  • seek to identify and develop additional product candidates;


  • acquire or in-license other product candidates or technologies;

• seek regulatory and marketing approvals for our product candidates that


           successfully complete clinical trials, if any;


      •    establish sales, marketing, distribution and other commercial
           infrastructure in the future to commercialize various products for
           which we may obtain marketing approval, if any;

• require the manufacture of larger quantities of product candidates for


           clinical development and, potentially, commercialization;


  • maintain, expand and protect our intellectual property portfolio;

• hire and retain additional personnel and add operational, financial and


           management information systems, including personnel and systems 

to


           support our product development and commercialization efforts 

and help


           us comply with our obligations as a public company; and


• add equipment and physical infrastructure to support our research and


           development programs.


Financial Operations Overview

Revenue



To date, our only revenue has consisted of collaboration and license revenue and
we have not generated any revenue from product sales and do not expect to
generate any revenue from product sales for the foreseeable future. For the
three months ended September 30, 2020, we recognized $3.8 million of revenue, of
which $3.5 million was related to our collaboration with GBT and $0.3 million to
our collaboration with Incyte. For the nine months ended September 30, 2020, we
recognized $9.4 million of revenue, of which $8.2 million was related to our
collaboration with GBT and $1.2 million to our collaboration with Incyte. For
the three and nine months ended September 30, 2019, the Company recognized $0.6
million and $1.5 million of revenue, respectively, all of which was attributable
to our collaboration with Incyte.

Expenses

Research and Development Expenses



Research and development expenses consist primarily of costs incurred for our
research activities, including development of our gene control platform and the
development of our product candidates, which include:

  • employee-related expenses including salaries and benefits;


  • stock-based compensation expense;

• external costs of funding activities performed by third parties that


           conduct research and development on our behalf and of purchasing
           supplies used in designing, developing and manufacturing 

preclinical


           study and clinical trial materials;


• consulting, licensing and professional fees related to research and


           development activities; and


                                       30

--------------------------------------------------------------------------------

• facilities costs, depreciation and amortization and other expenses,


           which include direct and allocated expenses for rent and 

maintenance of


           facilities, insurance and other operating costs.


Research and development costs are expensed as incurred. Nonrefundable advance
payments made to vendors for goods or services that will be received in the
future for use in research and development activities are deferred and
capitalized, even when there is no alternative future use for the research and
development, until related goods or services are provided.

We typically use our employee, consultant and infrastructure resources across
our research and development programs. We track outsourced development costs by
product candidate or development program, but we do not allocate personnel
costs, other internal costs or certain external consultant costs to specific
product candidates or development programs.

The following table summarizes our external research and development expenses by
program, as well as expenses not allocated to programs, for the three and nine
months ended September 30, 2020 and 2019 (in thousands):



                                               Three Months Ended              Nine Months Ended
                                                 September 30,                   September 30,
                                              2020            2019             2020          2019
SY-1425 external costs (1)                 $    4,049       $   2,342       $    9,204     $   4,157
SY-5609 and other CDK7 program
external costs (1)                              2,994           5,020            8,483        13,515
Other research and platform program
external costs                                  3,182           2,271            7,962         8,329
Employee-related expenses, including
stock-based compensation                        5,847           4,673           16,703        14,009
Facilities and other expenses                   1,602           1,625            4,687         3,958
Total research and development
expenses                                   $   17,674       $  15,931       $   47,039     $  43,968


_________________


(1) The results for the nine months ended September 30, 2019 include credits of

$1.9 million and $1.2 million for our SY-1425 and SY-1365 clinical trials,


       respectively, due to a change in estimate of costs incurred over the life
       of these clinical trials through March 31, 2019.




We expect our research and development expenses will increase for the
foreseeable future as we seek to advance our programs. At this time, we cannot
reasonably estimate or know the nature, timing and estimated costs of the
efforts that will be necessary to complete the development of our product
candidates. We are also unable to predict when, if ever, material net cash
inflows will commence from sales of our product candidates. This is due to the
numerous risks and uncertainties associated with developing such product
candidates, including the uncertainty of:



• successful completion of preclinical studies, including activities


           related to preparation of an IND and minimally efficacious dose 

studies


           in animals, where applicable and required, under the 

requirements of


           the U.S. Food and Drug Administration, or FDA, or another regulatory
           authority;




      •    approval of INDs for our product candidates to commence planned or

           future clinical trials;




  • successful enrollment in, and completion of, clinical trials;



• successful data from our clinical programs that support an acceptable


           benefit-risk profile of our product candidates in the intended
           populations;




      •    successful development, and subsequent clearance or approval, of
           companion diagnostic tests for use in identifying potential

patients;



• receipt of regulatory approvals from applicable regulatory authorities;






                                       31

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• establishment of arrangements with third-party manufacturers for


           clinical supply and commercial manufacturing and, where 

applicable,


           commercial manufacturing capabilities;



• establishment and maintenance of patent and trade secret protection or


           regulatory exclusivity for our product candidates;




      •    commercial launch of our product candidates, if and when approved,

           whether alone or in collaboration with others;




  • enforcement and defense of intellectual property rights and claims;




      •    maintenance of a continued acceptable safety profile of the product
           candidates following approval;




  • retention of key research and development personnel; and




  • the impact of the COVID-19 pandemic.




Any changes in the outcome of any of these variables with respect to the
development of our product candidates in preclinical and clinical development
could mean a significant change in the costs and timing associated with the
development of these product candidates. For example, if the FDA or another
regulatory authority were to delay our planned start of clinical trials or
require us to conduct clinical trials or other testing beyond those that we
currently expect or if we experience significant delays in enrollment in any of
our planned clinical trials, we could be required to expend significant
additional financial resources and time on the completion of clinical
development 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 and administrative functions. Other significant costs include corporate
facility costs not otherwise included in research and development expenses,
legal fees related to patent and corporate matters, and fees for accounting and
consulting services.

We anticipate that our general and administrative expenses will increase in the
future as we increase our headcount to support our continued research activities
and development of our product candidates.

Other (Expense) Income, Net





Other (expense) income, net, consists of interest expense related to the Oxford
term loan and equipment financing lease arrangements, net of interest income on
our cash and cash equivalents and interest and amortization of premiums and
discounts on our investments in marketable securities.

Critical Accounting Policies and Estimates



Our management's discussion and analysis of our financial condition and results
of operations are based on our financial statements, which have been prepared in
accordance with U.S. generally accepted accounting principles, or U.S. GAAP. The
preparation of these financial statements requires us to make judgments and
estimates that affect the reported amounts of assets, liabilities, revenues and
expenses and the disclosure of contingent assets and liabilities in our
financial statements. We base our estimates on historical experience, known
trends and events and various other factors that are believed to be reasonable
under the circumstances. Actual results may differ from these estimates under
different assumptions or conditions. On an ongoing basis, we evaluate our
judgments and estimates in light of changes in circumstances, facts and
experience. The effects of material revisions in estimates, if any, will be
reflected in the financial statements prospectively from the date of the change
in estimates.

We believe that our most critical accounting policies are those relating to
revenue recognition, accrued research and development expenses and stock-based
compensation. There have been no significant changes to our critical accounting
policies discussed in our Annual Report on Form 10-K for the year ended December
31, 2019 that we filed with the SEC on March 5, 2020.

                                       32

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Results of Operations

Comparison of three months ended September 30, 2020 and 2019



The following table summarizes our results of operations for the three months
ended September 30, 2020 and 2019, together with the changes in those items in
dollars (in thousands):



                                               Three Months Ended
                                                  September 30,
                                              2020             2019         Dollar Change       % Change
Statements of Operations Data:
Revenue                                    $    3,828       $      558     $         3,270            586   %
Operating expenses:
Research and development                       17,674           15,931               1,743             11   %
General and administrative                      5,151            5,016                 135              3   %
Total operating expenses                       22,825           20,947               1,878              9   %
Other (expense) income, net                      (489 )            596              (1,085 )         (182 ) %
Net loss                                   $  (19,486 )     $  (19,793 )   $          (307 )           (2 ) %




Revenue

For the three months ended September 30, 2020, revenue was $3.8 million, of which $3.5 million was attributable to our collaboration with GBT and $0.3 million was attributable to our collaboration with Incyte. For the three months ended September 30, 2019, revenue was $0.6 million, all of which was attributable to our collaboration with Incyte.

Research and Development Expense



Research and development expense increased by approximately $1.7 million, or
11%, from $15.9 million for the three months ended September 30, 2019 to $17.7
million for the three months ended September 30, 2020. The following table
summarizes our research and development expenses for the three months ended
September 30, 2020 and 2019, together with the changes to those items in dollars
(in thousands):



                                             Three Months Ended September 30,
                                                2020                  2019 

Dollar Change % Change External research and development $ 9,333 $ 8,710 $

           623              7   %
Employee-related expenses, excluding
stock-based compensation                             4,618                 3,798                 820             22   %
Stock-based compensation                             1,229                   875                 354             40   %
Consulting, licensing and professional
fees                                                   892                   923                 (31 )           (3 ) %
Facilities and other expenses                        1,602                 1,625                 (23 )           (1 ) %

Total research and development expenses $ 17,674 $ 15,931 $ 1,743

             11   %




The change in research and development expense was primarily attributable to
activities associated with advancing our clinical and preclinical programs as
well as enhancing our internal capabilities, including the following:

• an increase of approximately $0.6 million, or 7%, for external research


           and development costs, primarily due to increases in costs

associated


           with the continued advancement of our existing clinical trials of
           SY-5609 and SY-1425 and advancement of our preclinical programs,
           including our sickle cell disease development activities in
           collaboration with GBT;

• an increase of approximately $0.8 million, or 22%, for employee-related


           expenses, including increased salary and benefits, primarily due to our
           increased headcount; and


                                       33

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• an increase of approximately $0.4 million, or 40%, for stock-based


           compensation expense, also primarily due to our increased

headcount.

General and Administrative Expense



General and administrative expense increased by approximately $0.1 million, or
3%, from $5.0 million for the three months ended September 30, 2019 to $5.2
million for the three months ended September 30, 2020. The change in general and
administrative expense was primarily attributable to slight increases in patent
and accounting fees.

Other (Expense) Income, Net

Other (expense) income, net, consists of interest expense related to the Oxford
term loan and equipment financing arrangements, net of interest income on our
cash and cash equivalents and interest and amortization of premiums and
discounts on marketable securities. The change in other (expense) income, net
from the three months ended September 30, 2019 as compared to the three months
ended September 30, 2020 is primarily due to the Oxford term loan executed in
February 2020, and the related interest expense incurred during the three months
ended September 30, 2020.

Comparison of nine months ended September 30, 2020 and 2019



The following table summarizes our results of operations for the nine months
ended September 30, 2020 and 2019, together with the changes in those items in
dollars (in thousands):



                                            Nine Months Ended
                                              September 30,
                                          2020             2019         Dollar Change           % Change
Statements of Operations Data:
Revenue                                $    9,394       $    1,474     $         7,920                537   %
Operating expenses:
Research and development                   47,039           43,968               3,071                  7   %
General and administrative                 15,433           15,077                 356                  2   %
Total operating expenses                   62,472           59,045               3,427                  6   %
Other (expense) income, net                  (830 )          1,862              (2,692 )             (145 ) %
Net loss                               $  (53,908 )     $  (55,709 )   $        (1,801 )               (3 ) %




Revenue

For the nine months ended September 30, 2020, revenue was $9.4 million of which
$8.2 million was attributable to our collaboration with GBT and $1.2 million was
attributable to our collaboration with Incyte. For the nine months ended
September 30, 2019, revenue was $1.5 million, all of which was attributable to
our collaboration with Incyte.

Research and Development Expense



Research and development expense increased by approximately $3.1 million, or 7%,
from $44.0 million for the nine months ended September 30, 2019 to $47.0 million
for the nine months ended September 30, 2020. The following table summarizes our
research and development expenses for the nine months ended September 30, 2020
and 2019, together with the changes to those items in dollars (in thousands):



                                             Nine Months Ended September 30,
                                               2020                  2019  

Dollar Change % Change External research and development $ 23,074 $ 23,302 $ (228 )

            (1 ) %
Employee-related expenses, excluding
stock-based compensation                           13,244                11,520               1,724              15   %
Stock-based compensation                            3,459                 2,490                 969              39   %
Consulting, licensing and professional
fees                                                2,575                 2,699                (124 )            (5 ) %
Facilities and other expenses                       4,687                 3,957                 730              18   %

Total research and development expenses $ 47,039 $ 43,968 $ 3,071

               7   %


                                       34

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The change in research and development expense was primarily attributable to
activities associated with advancing our clinical and preclinical programs as
well as enhancing our internal capabilities, including the following:

• a decrease of approximately $0.2 million, or 1%, for external research


           and development costs, primarily due to decreases in costs

associated


           with the SY-1365 program following our October 2019 decision to
           prioritize our CDK7 development activities on our SY-5609

program;

• an increase of approximately $1.7 million, or 15%, for employee-related


           expenses, including increased salary and benefits, primarily due to our
           increased headcount;

• an increase of approximately $1.0 million, or 39%, for stock-based


           compensation expense, also primarily due to our increased

headcount;


           and


• an increase of approximately $0.7 million, or 18%, in facilities and


           other expenses primarily due to the rent expense related to the 

lease


           for our new headquarters, over which we took possession for

accounting


           purposes in May 2019, and depreciation related to the build-out of our
           new corporate headquarters.

General and Administrative Expense



General and administrative expense increased by approximately $0.4 million, or
2%, from $15.1 million for the nine months ended September 30, 2019 to $15.4
million for the nine months ended September 30, 2020. The change in general and
administrative expense was primarily attributable to an increase in
employee-related costs, including salary, benefits and stock-based compensation
due to our increased headcount.

Other (Expense) Income, Net



Other (expense) income, net, consists of interest expense related to the Oxford
term loan and equipment financing arrangements, net of interest income on our
cash and cash equivalents and interest and amortization of premiums and
discounts on marketable securities. The change in other (expense) income, net
from the nine months ended September 30, 2019 as compared to the nine months
ended September 30, 2020 is due to the Oxford term loan executed in February
2020, and the related interest expense incurred during the nine months ended
September 30, 2019.

Liquidity and Capital Resources

Sources of Liquidity



We funded our operations from inception through September 30, 2020, primarily
through the sale of equity securities, through license and collaboration
agreements, including those with Incyte and GBT, and through the Oxford term
loan.

On June 12, 2020, we filed a universal shelf registration statement on Form S-3
with the SEC to register for sale from time to time up to $300.0 million of
common stock, preferred stock, debt securities, warrants and/or units in one or
more registered offerings. The registration statement was declared effective on
June 22, 2020. Further, in June 2020, we entered into an at-the-market sales
agreement, or the 2020 sales agreement, with Cowen & Co., or Cowen, pursuant to
which we may offer and sell shares of our common stock having an aggregate
offering price of up to $75.0 million through Cowen pursuant to the registration
statement.

Upon entry into the 2020 sales agreement, we terminated our
prior at-the-market sales facility pursuant to the original sales agreement with
Cowen, dated July 20, 2017, or the 2017 sales agreement. During the nine months
ended September 30, 2020, we issued $12.3 million in common stock under the 2017
sales agreement.

As of September 30, 2020, $75.0 million in common stock remained available for future issuance under the 2020 sales agreement.

As of September 30, 2020, $300.0 million of securities remained available for future issuance under the shelf registration statement.

As of September 30, 2020, we had cash and cash equivalents of approximately $93.1 million.


                                       35

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Cash Flows

The following table provides information regarding our cash flows for the nine months ended September 30, 2020 and 2019 (in thousands):





                                                            Nine Months Ended September 30,
                                                              2020                   2019
Net cash (used in) provided by:
Operating activities                                    $        (27,440 )     $        (49,650 )
Investing activities                                              46,693                (28,687 )
Financing activities                                              32,149                 64,901
Net increase (decrease) in cash, cash equivalents and
restricted cash                                         $         51,402       $        (13,436 )

Net Cash Used in Operating Activities

The use of cash in the nine months ended September 30, 2020 and 2019 resulted primarily from our net losses adjusted for non-cash charges and changes in components of working capital.



Net cash used in operating activities was $27.4 million during the nine months
ended September 30, 2020 compared to net cash used in operation activities of
$49.7 million for the nine months ended September 30, 2019. The decrease in net
cash used in operating activities was primarily due to the $20.0 million
proceeds received in January 2020 from our collaboration agreement with GBT that
was entered into in December 2019, as well as $3.8 million of cost reimbursement
collected from GBT pursuant to the collaboration agreement, $0.5 million of
additional consideration collected from the Incyte collaboration, and $2.0
million received as tenant improvement incentive for the buildout of our
offices, each of which were received during the nine months ended September 30,
2020.

Net Cash Provided by (Used in) Investing Activities



Net cash provided by investing activities was $46.7 million during the nine
months ended September 30, 2020 compared to net cash used in investing
activities of $28.7 million during the nine months ended September 30, 2019. The
increase in cash provided by investing activities was primarily due to
maturities of marketable securities of $50.0 million during the nine months
ended September 30, 2020 as compared to net purchases of marketable securities
of $24.2 million during the nine months ended September 30, 2019, and due to the
$3.3 million of property and equipment purchased in the nine months ended
September 30, 2020 as compared to $4.5 million during the nine months ended
September 30, 2019.

Net Cash Provided by Financing Activities



Net cash provided by financing activities was $32.1 million during the nine
months ended September 30, 2020 compared to net cash provided by financing
activities of $64.9 million for the nine months ended September 30, 2019. Cash
provided by financing activities for the nine months ended September 30, 2020
was primarily due to net proceeds of $19.7 million received from our term loan
with Oxford, net proceeds of $11.9 million through the issuance of common stock
pursuant to the 2017 sales agreement, $0.5 million in proceeds from exercise of
stock options and $0.2 million in proceeds from the issuance of shares through
the employee stock purchase plan, offset by $0.2 million of payments made under
our capital lease obligations. Cash provided by financing activities for the
nine months ended September 30, 2019 was primarily due to $65.0 million in net
proceeds raised through two concurrent public offerings of equity securities
that closed in April 2019.

Funding Requirements



We expect our expenses to increase in connection with our ongoing activities,
particularly as we seek to continue clinical trials of SY-1425 and SY-5609,
advance additional product candidates through research and preclinical
development and into clinical trials, seek to develop companion diagnostic tests
for use with our product candidates, initiate new research and preclinical
development projects and seek marketing approval for any product candidates that
we successfully develop. In addition, if we obtain marketing approval for any of
our product candidates, we expect to incur significant commercialization
expenses related to establishing sales, marketing, distribution and other
commercial

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infrastructure to commercialize such products. We will need to obtain
substantial additional funding in connection with our continuing operations. If
we are unable to raise capital when needed or on favorable terms, we would be
forced to delay, reduce, eliminate, or out-license our research and development
programs or future commercialization rights to our product candidates.



We believe that our cash and cash equivalents as of September 30, 2020, will
enable us to fund our planned operating expense and capital expenditure
requirements into 2022. Our future funding requirements, both short-term and
long-term, will depend on many factors, including:



• the scope, progress, timing, costs and results of clinical trials of


           SY-1425 and SY-5609 and any associated companion diagnostic

tests;


      •    research and preclinical development efforts for any future product
           candidates that we may develop;


• the number of future product candidates that we pursue and their


           development requirements;


      •    our ability to enter into, and the terms and timing of, any
           collaborations, licensing agreements or other arrangements;

• whether a drug candidate will be nominated to enter investigational new


           drug application-enabling studies under our sickle cell disease
           collaboration with GBT, whether GBT will exercise its option to
           exclusively license intellectual property arising from the
           collaboration, whether and when any option exercise fees,

milestone


           payments or royalties under the collaboration agreement with GBT will
           ever be paid, and whether we exercise our U.S. co-promotion option
           under the GBT agreement;

• whether our target discovery collaboration with Incyte will yield any


           validated targets, whether Incyte will exercise any of its

options to


           exclusively license intellectual property directed to such

targets, and


           whether and when any of the target validation fees, option

exercise


           fees, milestone payments or royalties under the collaboration 

agreement


           with Incyte will ever be paid;


  • the outcome, timing and costs of seeking regulatory approvals;

• the costs of commercialization activities for any of our product


           candidates that receive marketing approval to the extent such 

costs are


           not the responsibility of any future collaborators, including 

the costs


           and timing of establishing product sales, marketing, 

distribution and


           manufacturing capabilities;


• the costs of acquiring potential new product candidates or technology;

• the costs of any physician education programs relating to selecting and


           treating genomically defined patient populations;


• the timing and amount of milestone and other payments due to licensors


           for patent and technology rights used in our gene control

platform or


           to TMRC Co. Ltd., or TMRC, associated with the development,

manufacture


           and commercialization of SY-1425;


      •    revenue received from commercial sales, if any, of our current and
           future product candidates;


      •    our headcount growth and associated costs as we advance our research
           and development programs and establish a commercial

infrastructure;

• the costs of preparing, filing and prosecuting patent applications,


           maintaining and protecting our intellectual property rights and
           defending against intellectual property related claims; and


  • the impact of the COVID-19 pandemic.


Identifying potential product candidates and conducting preclinical studies and
clinical trials is a time-consuming, expensive and uncertain process that takes
many years to complete, and we may never generate the necessary data or results
required to obtain marketing approval and achieve product sales. In addition,
our product

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candidates, if approved, may not achieve commercial success. Accordingly, we
will need to continue to rely on additional financing to achieve our business
objectives. Adequate additional financing may not be available to us on
acceptable terms, or at all.



Until such time, if ever, as we can generate substantial product revenues, we
expect to finance our cash needs through a combination of equity offerings, debt
financings, collaborations, strategic alliances and licensing arrangements. To
the extent that we raise additional capital through the sale of equity or
convertible debt securities, the ownership interests of our common stockholders
will be diluted, and the terms of these securities may include liquidation or
other preferences that adversely affect the rights of our common stockholders.
Debt financing, such as our term loan with Oxford, may involve agreements that
include covenants limiting or restricting our ability to take specific actions,
such as incurring additional debt, making capital expenditures or declaring
dividends. In addition, the trading prices for our common stock has been and may
continue to be highly volatile, and this volatility may be exacerbated by the
COVID-19 pandemic. As a result, we may face difficulties raising capital when
needed through sales of our common stock or such sales may be on unfavorable
terms.



If we raise funds through additional collaborations, strategic alliances or
licensing arrangements with third parties, we may have to relinquish valuable
rights to our technologies, future revenue streams, research programs or product
candidates or to grant licenses on terms that may not be favorable to us. If we
are unable to raise additional funds through equity or debt financings when
needed, we may be required to delay, limit, reduce or terminate our product
development or future commercialization efforts or grant rights to develop and
market product candidates that we would otherwise prefer to develop and market
ourselves.

Off-Balance Sheet Arrangements

We did not have, during the periods presented, and we do not currently have, any off-balance sheet arrangements, as defined under applicable SEC rules.

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