On September 14, 2024 Johnson & Johnson (NYSE:JNJ) reported updated results from the Phase 3 MARIPOSA-2 study which showed RYBREVANT (amivantamab-vmjw) combined with chemotherapy led to consistent benefit across post-progression outcomes in adult patients with previously treated non-small cell lung cancer (NSCLC) with epidermal growth factor receptor (EGFR) exon 19 deletions (ex19del) or L858R substitution mutations (Press release, Johnson & Johnson, SEP 14, 2024, View Source [SID1234646578]). The data also reveal a favorable trend toward improved overall survival (OS) compared to chemotherapy alone. Results were presented at the European Society of Medical Oncology (ESMO) (Free ESMO Whitepaper) 2024 Congress.1
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"The positive overall survival trend seen in MARIPOSA-2 is incredibly promising, suggesting that amivantamab combined with chemotherapy could potentially change the treatment landscape for a population that has historically faced limited options," said Prof. Sanjay Popat, FRCP, Ph.D., medical oncologist at the Royal Marsden Hospital and the Institute of Cancer Research in the United Kingdom, and presenting author.* "Building on the strong progression-free survival data previously reported from this study and by helping more patients stay on treatment for longer, we are improving their chances for better outcomes."
At the second interim analysis, with a median follow-up of 18.1 months, 50 percent of patients treated with RYBREVANT plus chemotherapy were still alive at the 18-month landmark, compared to 40 percent of those receiving chemotherapy alone (median OS, 17.7 vs 15.3 months, respectively; hazard ratio [HR], 0.73; [95 percent confidence interval [CI], 0.54–0.99]; nominal P=0.039). RYBREVANT plus chemotherapy showed a significant improvement in treatment discontinuation rates, with nearly five times as many patients remaining on therapy at 18 months (22 percent) compared to chemotherapy (4 percent) (median time to treatment discontinuation [TTD], 10.4 vs 4.5 months, respectively; HR, 0.42; [95 percent CI, 0.33–0.53]; nominal P<0.0001). Additionally, patients treated with RYBREVANT plus chemotherapy experienced a 27 percent reduction in the risk of symptomatic progression (median time to symptomatic progression [TTSP], 16.0 vs 11.8 months; HR, 0.73; [95 percent CI, 0.55–0.96]; nominal P=0.026). The time to subsequent therapy was significantly prolonged with the RYBREVANT combination compared to chemotherapy (median time to subsequent therapy [TTST], 12.2 vs 6.6 months, respectively; HR, 0.51; [95 percent CI, 0.39–0.65]; nominal P<0.0001), which also reduced the risk of second disease progression or death by 36 percent (medan progression-free survival [PFS2], 16.0 vs 11.6 months, respectively; HR, 0.64; [95 percent CI, 0.48–0.85]; nominal P=0.002).1
In the MARIPOSA-2 study, the safety profile of RYBREVANT in combination with chemotherapy was consistent with the established profiles of the individual treatments. Permanent discontinuation of RYBREVANT due to adverse reactions occurred in 11 percent of patients.2
"We are pleased to see that RYBREVANT plus chemotherapy continues to show improved survival outcomes after a year and a half of follow-up, providing real benefits to patients with few other options," said Joshua Bauml, M.D., Vice President, Lung Cancer Disease Area Stronghold Leader, Johnson & Johnson Innovative Medicine. "These results underscore the potential of this combination regimen to make a meaningful difference for patients, and we anticipate continued improvement as we move toward the final analysis."
RYBREVANT plus chemotherapy received approval by the European Commision in August 2024 as a treatment for patients with previously treated NSCLC with common EGFR mutations based on the superior efficacy and safety profile demonstrated in this study.
About the MARIPOSA-2 Study
MARIPOSA-2 (NCT04988295) is a randomized, open-label Phase 3 study evaluating the efficacy and safety of two regimens of RYBREVANT (with and without LAZCLUZE) and chemotherapy. Patients with locally advanced or metastatic EGFR ex19del or L858R substitution NSCLC who had disease progression on or after osimertinib were randomized to treatment with RYBREVANT plus chemotherapy, RYBREVANT plus chemotherapy with LAZCLUZE, or chemotherapy alone. The dual primary endpoint was used to compare the progression-free survival (PFS) (using RECIST v1.1 guidelines) as assessed by blinded independent central review (BICR) for each experimental arm to chemotherapy alone. Secondary endpoints included objective response as assessed by BICR, OS, duration of response (DoR), time to subsequent therapy, PFS after first subsequent therapy (PFS2) and intracranial PFS. All study participants underwent serial brain imaging to allow for the robust assessment of intracranial endpoints, and to assess the central nervous system (CNS) activity of RYBREVANT with and without LAZCLUZE. As brain metastases can lead to significant burden and poor outcomes for patients, this aspect of the study design provides critical information in an area of high unmet need. The study enrolled 657 patients with locally advanced or metastatic EGFR ex19del or L858R substitution NSCLC who had disease progression on or after osimertinib.3
About RYBREVANT
RYBREVANT (amivantamab-vmjw), a fully-human bispecific antibody targeting EGFR and MET with immune cell-directing activity, is approved in the U.S., Europe, and in other markets around the world as monotherapy for the treatment of adult patients with locally advanced or metastatic NSCLC with EGFR exon 20 insertion mutations, as detected by an FDA-approved test, whose disease has progressed on or after platinum-based chemotherapy.4
RYBREVANT is approved in the U.S., Europe and in markets around the world in combination with chemotherapy (carboplatin and pemetrexed) for the first-line treatment of adult patients with locally advanced or metastatic NSCLC with EGFR exon 20 insertion mutations, as detected by an FDA-approved test.
RYBREVANT is approved in the U.S. in combination with LAZCLUZE (lazertinib) for the first-line treatment of adult patients with locally advanced or metastatic NSCLC with EGFR exon 19 deletions or L858R substitution mutations, as detected by an FDA-approved test. A marketing authorization application (MAA) and type II extension of indication application were submitted to the European Medicines Agency (EMA) seeking approval of LAZCLUZE in combination with RYBREVANT based on the MARIPOSA study.
In November 2023, Johnson & Johnson submitted a supplemental Biologics License Application (sBLA) to the U.S. FDA for RYBREVANT in combination with chemotherapy for the treatment of patients with EGFR-mutated NSCLC who progressed on or after osimertinib based on the MARIPOSA-2 study. This indication was approved in Europe in August 2024.
In June 2024, Johnson & Johnson submitted a BLA to the U.S. FDA for the subcutaneous formulation of RYBREVANT in combination with LAZCLUZE for all currently approved or submitted indications of intravenous (IV) RYBREVANT in certain patients with NSCLC. A submission for the extension of the RYBREVANT marketing authorization (line extension) was also submitted to the EMA seeking approval for this indication.
The NCCN Clinical Practice Guidelines in Oncology (NCCN Guidelines) for NSCLC§ prefer next-generation sequencing–based strategies over polymerase chain reaction–based approaches for the detection of EGFR exon 20 insertion variants. The NCCN Guidelines include:
Amivantamab-vmjw (RYBREVANT) plus lazertinib (LAZCLUZE) as a Category 1 recommendation for first-line therapy in patients with locally advanced or metastatic NSCLC with EGFR exon 19 deletions or exon 21 L858R mutations.5 †‡
Amivantamab-vmjw (RYBREVANT) plus chemotherapy as a Category 1 recommendation for patients with locally advanced or metastatic NCSLC with EGFR exon 19 deletions or exon 21 L858R mutations who experienced disease progression after treatment with osimertinib.5 †‡
Amivantamab-vmjw (RYBREVANT) plus carboplatin and pemetrexed as a Category 1 recommendation for first-line therapy in treatment-naive patients with newly diagnosed advanced or metastatic EGFR exon 20 insertion mutation-positive advanced NSCLC, or as 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.5 †‡
Amivantamab-vmjw (RYBREVANT) as a Category 2A recommendation for patients that have progressed on or after platinum-based chemotherapy with or without an immunotherapy and have EGFR exon 20 insertion mutation-positive NSCLC.5 †‡
In addition to the MARIPOSA-2 study, RYBREVANT is being studied in multiple clinical trials, including:
The Phase 3 MARIPOSA (NCT04487080) study assessing RYBREVANT in combination with LAZCLUZE versus osimertinib and versus LAZCLUZE alone in the first-line treatment of patients with locally advanced or metastatic NSCLC with EGFR ex19del or L858R substitution mutations.6
• The Phase 3 PAPILLON (NCT04538664) study assessing RYBREVANT in combination with carboplatin-pemetrexed versus chemotherapy alone in the first-line treatment of patients with advanced or metastatic NSCLC with EGFR exon 20 insertion mutations.7
The Phase 3 PALOMA-3 (NCT05388669) study assessing LAZCLUZE with subcutaneous amivantamab compared to intravenous amivantamab in patients with EGFR-mutated advanced or metastatic NSCLC.8
The Phase 2 PALOMA-2 (NCT05498428) study assessing subcutaneous amivantamab in patients with advanced or metastatic solid tumors including EGFR-mutated NSCLC.9
The Phase 1 PALOMA (NCT04606381) study assessing the feasibility of subcutaneous administration of amivantamab based on safety and pharmacokinetics and to determine a dose, dose regimen and formulation for amivantamab subcutaneous delivery.10
The Phase 1 CHRYSALIS (NCT02609776) study evaluating RYBREVANT in patients with advanced NSCLC.11
The Phase 1/1b CHRYSALIS-2 (NCT04077463) study evaluating RYBREVANT in combination with LAZCLUZE and LAZCLUZE as a monotherapy in patients with advanced NSCLC with EGFR mutations.12
The Phase 1/2 METalmark (NCT05488314) study assessing RYBREVANT and capmatinib combination therapy in locally advanced or metastatic NSCLC.13
The Phase 1/2 PolyDamas (NCT05908734) study assessing RYBREVANT and cetrelimab combination therapy in locally advanced or metastatic NSCLC.14
The Phase 2 SKIPPirr study (NCT05663866) exploring how to decrease the incidence and/or severity of first-dose infusion-related reactions with RYBREVANT in combination with LAZCLUZE in relapsed or refractory EGFR-mutated advanced or metastatic NSCLC.15
The Phase 1/2 swalloWTail (NCT06532032) study assessing RYBREVANT and docetaxel combination therapy in patients with metastatic NSCLC.16
The Phase 1b/2 OrigAMI-1 (NCT05379595) study assessing RYBREVANT monotherapy and in addition to standard-of-care chemotherapy in patients with advanced or metastatic colorectal cancer.17
The Phase 1b/2 OrigAMI-4 (NCT06385080) study assessing RYBREVANT monotherapy and in addition to standard-of-care therapeutic agents in patients with recurrent/metastatic head and neck squamous cell carcinoma.18
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About LAZCLUZE
In 2018, Janssen Biotech, Inc., entered into a license and collaboration agreement with Yuhan Corporation for the development of LAZCLUZE (marketed as LACLAZA in Korea). LAZCLUZE is an oral, third-generation, brain-penetrant EGFR TKI that targets both the T790M mutation and activating EGFR mutations while sparing wild-type EGFR. An analysis of the efficacy and safety of LAZCLUZE from the Phase 3 LASER301 study was published in The Journal of Clinical Oncology in 2023.
About Non-Small Cell Lung Cancer
Worldwide, lung cancer is one of the most common cancers, with NSCLC making up 80 to 85 percent of all lung cancer cases.19,20 The main subtypes of NSCLC are adenocarcinoma, squamous cell carcinoma, and large cell carcinoma.21 Among the most common driver mutations in NSCLC are alterations in EGFR, which is a receptor tyrosine kinase controlling cell growth and division.22 EGFR mutations are present in 10 to 15 percent of Western patients with NSCLC with adenocarcinoma histology and occur in 40 to 50 percent of Asian patients.19,20,23,24,25,26 EGFR ex19del or EGFR L858R mutations are the most common EGFR mutations.27 The five- year survival rate for all people with advanced NSCLC and EGFR mutations treated with EGFR tyrosine kinase inhibitors (TKIs) is less than 20 percent.28,29 EGFR exon 20 insertion mutations are the third most prevalent activating EGFR mutation.30 Patients with EGFR exon 20 insertion mutations have a real-world five-year overall survival (OS) of eight percent in the frontline setting, which is worse than patients with EGFR ex19del or L858R mutations, who have a real-world five-year OS of 19 percent.31
IMPORTANT SAFETY INFORMATION4,32
WARNINGS AND PRECAUTIONS
Infusion-Related Reactions
RYBREVANT can cause infusion-related reactions (IRR); signs and symptoms of IRR include dyspnea, flushing, fever, chills, nausea, chest discomfort, hypotension, and vomiting. The median time to IRR onset is approximately 1 hour.
RYBREVANT with LAZCLUZE
RYBREVANT in combination with LAZCLUZE can cause infusion-related reactions. In MARIPOSA (n=421), IRRs occurred in 63% of patients treated with RYBREVANT in combination with LAZCLUZE, including Grade 3 in 5% and Grade 4 in 1% of patients. The incidence of infusion modifications due to IRR was 54% of patients, and IRRs leading to dose reduction of RYBREVANT occurred in 0.7% of patients. Infusion-related reactions leading to permanent discontinuation of RYBREVANT occurred in 4.5% of patients receiving RYBREVANT in combination with LAZCLUZE.
RYBREVANT with Carboplatin and Pemetrexed
In PAPILLON (n=151), infusion-related reactions occurred in 42% of patients treated with RYBREVANT in combination with carboplatin and pemetrexed, including Grade 3 (1.3%) adverse reactions. The incidence of infusion modifications due to IRR was 40%, and 0.7% of patients permanently discontinued RYBREVANT.
RYBREVANT as a Single Agent
In CHRYSALIS (n=302), IRR occurred in 66% of patients treated with RYBREVANT. Among patients receiving treatment on Week 1 Day 1, 65% experienced an IRR, while the incidence of IRR was 3.4% with the Day 2 infusion, 0.4% with the Week 2 infusion, and cumulatively 1.1% with subsequent infusions. Of the reported IRRs, 97% were Grade 1-2, 2.2% were Grade 3, and 0.4% were Grade 4. The median time to onset was 1 hour (range 0.1 to 18 hours) after start of infusion. The incidence of infusion modifications due to IRR was 62% and 1.3% of patients permanently discontinued RYBREVANT due to IRR.
Premedicate with antihistamines, antipyretics, and glucocorticoids and infuse RYBREVANT as recommended. Administer RYBREVANT via a peripheral line on Week 1 and Week 2 to reduce the risk of infusion-related reactions. Monitor patients for signs and symptoms of infusion reactions during RYBREVANT infusion in a setting where cardiopulmonary resuscitation medication and equipment are available. Interrupt infusion if IRR is suspected. Reduce the infusion rate or permanently discontinue RYBREVANT based on severity.
Interstitial Lung Disease/Pneumonitis
RYBREVANT can cause severe and fatal interstitial lung disease (ILD)/pneumonitis.
RYBREVANT with LAZCLUZE
In MARIPOSA, ILD/pneumonitis occurred in 3.1% of patients treated with RYBREVANT in combination with LAZCLUZE, including Grade 3 in 1.0% and Grade 4 in 0.2% of patients. There was one fatal case (0.2%) of ILD/pneumonitis and 2.9% of patients permanently discontinued RYBREVANT and LAZCLUZE due to ILD/pneumonitis.
RYBREVANT with Carboplatin and Pemetrexed
In PAPILLON, Grade 3 ILD/pneumonitis occurred in 2.6% of patients treated with RYBREVANT in combination with carboplatin and pemetrexed, all patients required permanent discontinuation.
RYBREVANT as a Single Agent
In CHRYSALIS, ILD/pneumonitis occurred in 3.3% of patients treated with RYBREVANT, with 0.7% of patients experiencing Grade 3 ILD/pneumonitis. Three patients (1%) discontinued RYBREVANT due to ILD/pneumonitis.
Monitor patients for new or worsening symptoms indicative of ILD/pneumonitis (e.g., dyspnea, cough, fever). For patients receiving RYBREVANT in combination with LAZCLUZE, immediately withhold both drugs in patients with suspected ILD/pneumonitis and permanently discontinue if ILD/pneumonitis is confirmed. For patients receiving RYBREVANT as a single agent or in combination with carboplatin and pemetrexed, immediately withhold RYBREVANT in patients with suspected ILD/pneumonitis and permanently discontinue if ILD/pneumonitis is confirmed.
Venous Thromboembolic (VTE) Events with Concomitant Use of RYBREVANT and LAZCLUZE
RYBREVANT in combination with LAZCLUZE can cause serious and fatal venous thromboembolic (VTEs) events, including deep vein thrombosis and pulmonary embolism. The majority of these events occurred during the first four months of therapy.
In MARIPOSA, VTEs occurred in 36% of patients receiving RYBREVANT in combination with LAZCLUZE, including Grade 3 in 10% and Grade 4 in 0.5% of patients. On-study VTEs occurred in 1.2% of patients (n=5) while receiving anticoagulation therapy. There were two fatal cases of VTE (0.5%), 9% of patients had VTE leading to dose interruptions of RYBREVANT, and 7% of patients had VTE leading to dose interruptions of LAZCLUZE; 1% of patients had VTE leading to dose reductions of RYBREVANT, and 0.5% of patients had VTE leading to dose reductions of LAZCLUZE; 3.1% of patients had VTE leading to permanent discontinuation of RYBREVANT, and 1.9% of patients had VTE leading to permanent discontinuation of LAZCLUZE. The median time to onset of VTEs was 84 days (range: 6 to 777).
Administer prophylactic anticoagulation for the first four months of treatment. The use of Vitamin K antagonists is not recommended. Monitor for signs and symptoms of VTE events and treat as medically appropriate.
Withhold RYBREVANT and LAZCLUZE based on severity. Once anticoagulant treatment has been initiated, resume RYBREVANT and LAZCLUZE at the same dose level at the discretion of the healthcare provider. In the event of VTE recurrence despite therapeutic anticoagulation, permanently discontinue RYBREVANT and continue treatment with LAZCLUZE at the same dose level at the discretion of the healthcare provider.
Dermatologic Adverse Reactions
RYBREVANT can cause severe rash including toxic epidermal necrolysis (TEN), dermatitis acneiform, pruritus, and dry skin.
RYBREVANT with LAZCLUZE
In MARIPOSA, rash occurred in 86% of patients treated with RYBREVANT in combination with LAZCLUZE, including Grade 3 in 26% of patients. The median time to onset of rash was 14 days (range: 1 to 556 days). Rash leading to dose interruptions occurred in 37% of patients for RYBREVANT and 30% for LAZCLUZE, rash leading to dose reductions occurred in 23% of patients for RYBREVANT and 19% for LAZCLUZE, and rash leading to permanent discontinuation occurred in 5% of patients for RYBREVANT and 1.7% for LAZCLUZE.
RYBREVANT with Carboplatin and Pemetrexed
In PAPILLON, rash occurred in 89% of patients treated with RYBREVANT in combination with carboplatin and pemetrexed, including Grade 3 (19%) adverse reactions. Rash leading to dose reductions occurred in 19% of patients, and 2% permanently discontinued RYBREVANT and 1.3% discontinued pemetrexed.
RYBREVANT as a Single Agent
In CHRYSALIS, rash occurred in 74% of patients treated with RYBREVANT as a single agent, including Grade 3 rash in 3.3% of patients. The median time to onset of rash was 14 days (range: 1 to 276 days). Rash leading to dose reduction occurred in 5% of patients, and RYBREVANT was permanently discontinued due to rash in 0.7% of patients.
Toxic epidermal necrolysis occurred in one patient (0.3%) treated with RYBREVANT as a single agent.
Instruct patients to limit sun exposure during and for 2 months after treatment with RYBREVANT or LAZCLUZE in combination with RYBREVANT. Advise patients to wear protective clothing and use broad-spectrum UVA/UVB sunscreen. Alcohol-free (e.g., isopropanol-free, ethanol-free) emollient cream is recommended for dry skin.
When initiating RYBREVANT treatment with or without LAZCLUZE, administer alcohol-free emollient cream to reduce the risk of dermatologic adverse reactions. Consider prophylactic measures (e.g. use of oral antibiotics) to reduce the risk of dermatologic reactions. If skin reactions develop, start topical corticosteroids and topical and/or oral antibiotics. For Grade 3 reactions, add oral steroids and consider dermatologic consultation. Promptly refer patients presenting with severe rash, atypical appearance or distribution, or lack of improvement within 2 weeks to a dermatologist. For patients receiving RYBREVANT in combination with LAZCLUZE, withhold, dose reduce or permanently discontinue both drugs based on severity. For patients receiving RYBREVANT as a single agent or in combination with carboplatin and pemetrexed, withhold, dose reduce or permanently discontinue RYBREVANT based on severity.
Ocular Toxicity
RYBREVANT can cause ocular toxicity including keratitis, blepharitis, dry eye symptoms, conjunctival redness, blurred vision, visual impairment, ocular itching, eye pruritus, and uveitis.
RYBREVANT with LAZCLUZE
In MARIPOSA, ocular toxicity occurred in 16% of patients treated with RYBREVANT in combination with LAZCLUZE, including Grade 3 or 4 ocular toxicity in 0.7% of patients. Withhold, reduce the dose, or permanently discontinue RYBREVANT and continue LAZCLUZE based on severity.
RYBREVANT with Carboplatin and Pemetrexed
In PAPILLON, ocular toxicity including blepharitis, dry eye, conjunctival redness, blurred vision, and eye pruritus occurred in 9%. All events were Grade 1-2.
RYBREVANT as a Single Agent
In CHRYSALIS, keratitis occurred in 0.7% and uveitis occurred in 0.3% of patients treated with RYBREVANT. All events were Grade 1-2.
Promptly refer patients with new or worsening eye symptoms to an ophthalmologist. Withhold, dose reduce or permanently discontinue RYBREVANT based on severity.
Embryo-Fetal Toxicity
Based on its mechanism of action and findings from animal models, RYBREVANT and LAZCLUZE can cause fetal harm when administered to a pregnant woman. Advise females of reproductive potential of the potential risk to the fetus.
Advise female patients of reproductive potential to use effective contraception during treatment and for 3 months after the last dose of RYBREVANT.
Advise females of reproductive potential to use effective contraception during treatment with LAZCLUZE and for 3 weeks after the last dose. Advise male patients with female partners of reproductive potential to use effective contraception during treatment with LAZCLUZE and for 3 weeks after the last dose.
Adverse Reactions
RYBREVANT with LAZCLUZE
For the 421 patients in the MARIPOSA clinical trial who received RYBREVANT in combination with LAZCLUZE, the most common adverse reactions (≥20%) were rash (86%), nail toxicity (71%), infusion-related reactions (RYBREVANT, 63%), musculoskeletal pain (47%), stomatitis (43%), edema (43%), VTE (36%), paresthesia (35%), fatigue (32%), diarrhea (31%), constipation (29%), COVID-19 (26%), hemorrhage (25%), dry skin (25%), decreased appetite (24%), pruritus (24%), nausea (21%), and ocular toxicity (16%). The most common Grade 3 or 4 laboratory abnormalities (≥2%) were decreased albumin (8%), decreased sodium (7%), increased ALT (7%), decreased potassium (5%), decreased hemoglobin (3.8%), increased AST (3.8%), increased GGT (2.6%), and increased magnesium (2.6%).
Serious adverse reactions occurred in 49% of patients who received RYBREVANT in combination with LAZCLUZE. Serious adverse reactions occurring in ≥2% of patients included VTE (11%), pneumonia (4%), ILD/pneumonitis and rash (2.9% each), COVID-19 (2.4%), and pleural effusion and infusion-related reaction (RYBREVANT) (2.1% each). Fatal adverse reactions occurred in 7% of patients who received RYBREVANT in combination with LAZCLUZE due to death not otherwise specified (1.2%); sepsis and respiratory failure (1% each); pneumonia, myocardial infarction, and sudden death (0.7% each); cerebral infarction, pulmonary embolism (PE), and COVID-19 infection (0.5% each); and ILD/pneumonitis, acute respiratory distress syndrome (ARDS), and cardiopulmonary arrest (0.2% each).
RYBREVANT with Carboplatin and Pemetrexed
For the 151 patients in the PAPILLON clinical trial who received RYBREVANT in combination with carboplatin and pemetrexed, the most common adverse reactions (≥20%) were rash (90%), nail toxicity (62%), stomatitis (43%), infusion-related reaction (42%), fatigue (42%), edema (40%), constipation (40%), decreased appetite (36%), nausea (36%), COVID-19 (24%), diarrhea (21%), and vomiting (21%). The most common Grade 3 to 4 laboratory abnormalities (≥2%) were decreased albumin (7%), increased alanine aminotransferase (4%), increased gamma-glutamyl transferase (4%), decreased sodium (7%), decreased potassium (11%), decreased magnesium (2%), and decreases in white blood cells (17%), hemoglobin (11%), neutrophils (36%), platelets (10%), and lymphocytes (11%).
Serious adverse reactions occurred in 37% of patients who received RYBREVANT in combination with carboplatin and pemetrexed. Serious adverse reactions in ≥2% of patients included rash, pneumonia, ILD, pulmonary embolism, vomiting, and COVID-19. Fatal adverse reactions occurred in 7 patients (4.6%) due to pneumonia, cerebrovascular accident, cardio-respiratory arrest, COVID-19, sepsis, and death not otherwise specified.
RYBREVANT as a Single Agent
For the 129 patients in the CHRYSALIS clinical trial who received RYBREVANT as a single agent, the most common adverse reactions (≥20%) were rash (84%), IRR (64%), paronychia (50%), musculoskeletal pain (47%), dyspnea (37%), nausea (36%), fatigue (33%), edema (27%), stomatitis (26%), cough (25%), constipation (23%), and vomiting (22%). The most common Grade 3 to 4 laboratory abnormalities (≥2%) were decreased lymphocytes (8%), decreased albumin (8%), decreased phosphate (8%), decreased potassium (6%), increased alkaline phosphatase (4.8%), increased glucose (4%), increased gamma-glutamyl transferase (4%), and decreased sodium (4%).
Serious adverse reactions occurred in 30% of patients who received RYBREVANT. Serious adverse reactions in ≥2% of patients included pulmonary embolism, pneumonitis/ILD, dyspnea, musculoskeletal pain, pneumonia, and muscular weakness. Fatal adverse reactions occurred in 2 patients (1.5%) due to pneumonia and 1 patient (0.8%) due to sudden death.
LAZCLUZE Drug Interactions
Avoid concomitant use of LAZCLUZE with strong and moderate CYP3A4 inducers. Consider an alternate concomitant medication with no potential to induce CYP3A4.
Monitor for adverse reactions associated with a CYP3A4 or BCRP substrate where minimal concentration changes may lead to serious adverse reactions, as recommended in the approved product labeling for the CYP3A4 or BCRP substrate.
Please read full Prescribing Information for RYBREVANT.
Please read full Prescribing Information for LAZCLUZE.