Data from the study showed long-term response and safety in this population and were presented in an oral presentation at the 2023
In the analysis of the CHRYSALIS study, investigators assessed the efficacy and safety of RYBREVANT in patients (n=114) with NSCLC and EGFR exon 20 insertion mutations, who had progressed on prior platinum-based chemotherapy, and were treated at the approved Phase 2 dose of 1050 mg (1400 mg for a patient weight of at least 80 kg).1 The primary endpoint was overall response rate (ORR) per Response Evaluation Criteria in Solid Tumors Version 1.1 (RECIST v1.1).1 Additional endpoints included duration of response (DOR), clinical benefit rate, progression-free survival (PFS) and overall survival (OS).1
After a median follow-up of 19.2 months, the median OS with RYBREVANT treatment was 23 months (95 percent Confidence Interval [CI], 18.5-29.5) with a two-year OS rate of 47 percent.1 The investigator-assessed ORR was 37 percent (95 percent CI, 28-46) with a median DOR of 12.5 months (95 percent CI, 6.9-19.3), and median PFS of 6.9 months (95 percent CI, 5.6-8.8).1 Across subgroups, treatment with RYBREVANT resulted in consistent efficacy across post-platinum patients with EGFR exon 20 insertion mutations, including the elderly, regardless of prior therapies or response to prior platinum chemotherapy.1 Forty-eight patients (42 percent) had sustained clinical response measured by ORR on RYBREVANT for at least 12 cycles.1 The median duration of treatment was 7.5 months and treatment is ongoing in 15 patients (13 percent) who have received RYBREVANT for a median of 2.6 years.1 Of these patients, seven are progression-free and eight are receiving treatment beyond progression.1
No new safety signals were identified and rash (all group, 89 percent), infusion-related reactions (IRR; 67 percent) and paronychia (58 percent) remained the most common treatment emergent adverse events (AEs).1 The incidence of treatment-related AEs leading to dose interruption, reduction and discontinuation was 29 percent, 18 percent and seven percent, respectively.1
'With these new data, amivantamab showed long-term consistent efficacy regardless of prior therapies or response to prior platinum chemotherapy,' said Pilar Garridot, M.D., Associate Professor of Medical Oncology at Universidad de Alcala, Head of
NSCLC driven by EGFR exon 20 insertion mutations carries a worse prognosis and shorter survival rates compared with lung cancer driven by more common EGFR mutations, such as exon 19 deletions and L858R substitutions.2 The standard of care for common EGFR mutations, such as EGFR tyrosine kinase inhibitor (TKIs), are generally inactive against exon 20 insertion mutations and are not FDA-approved for these patients.2
'The long-term CHRYSALIS data presented at ELCC support RYBREVANT as an important treatment option for patients with EGFR exon 20 insertion mutation-positive NSCLC, providing valuable clinical insights that may help inform treatment decisions,' said
About the CHRYSALIS Study
CHRYSALIS (NCT02609776) is a Phase 1 open-label, multicenter, first-in-human study to evaluate the safety, pharmacokinetics and preliminary efficacy of RYBREVANT as a monotherapy and in combinations including with lazertinib, a novel third-generation EGFR TKI[3], in adults with advanced NSCLC.[4] The study consists of two parts: RYBREVANT monotherapy and combination-dose escalations (Part 1) and RYBREVANT monotherapy and combination-dose expansions (Part 2). The study enrolled 780 patients with advanced NSCLC.5
In the ongoing CHRYSALIS study, patients with locally advanced or metastatic NSCLC with EGFR exon 20 insertion mutations weighing less than 80 kg received RYBREVANT 1050 mg and patients weighing at least 80 kg or more received RYBREVANT 1400 mg weekly for four weeks, with the initial dose as a split infusion in week 1 on day 1 and day 2, then administered every two weeks thereafter until disease progression or unacceptable toxicity.5 Disease response using ORR, per Response Evaluation Criteria in Solid Tumors Version 1.1 (RECIST v1.1) as evaluated by Blinded Independent Central Review (BICR), was the primary endpoint.
About RYBREVANT
RYBREVANT (amivantamab-vmjw) received accelerated approval by the
The NCCN Clinical Practice Guidelines in Oncology (NCCN Guidelines) for Non-Small Cell Lung Cancer prefer NGS-based strategies over PCR-based approaches for the detection of EGFR exon 20 insertion variants and include amivantamab-vmjw (RYBREVANT) as a subsequent therapy option with a Category 2A recommendation for patients that have progressed on or after platinum-based chemotherapy with or without immunotherapy and have EGFR exon 20 insertion mutation-positive advanced NSCLC.7(+)^
About the Janssen Pharmaceutical Companies of
At Janssen, we're creating a future where disease is a thing of the past. We're the Pharmaceutical Companies of
Cautions Concerning Forward-Looking Statements
This press release contains 'forward-looking statements' as defined in the Private Securities Litigation Reform Act of 1995 regarding product development and the potential benefits and treatment impact of RYBREVANT (amivantamab-vmjw). The reader is cautioned not to rely on these forward-looking statements. These statements are based on current expectations of future events. If underlying assumptions prove inaccurate or known or unknown risks or uncertainties materialize, actual results could vary materially from the expectations and projections of
Contact:
Tel: +1 732-524-6164
(C) 2023 Electronic News Publishing, source