PRINCETON, New Jersey, June 2, 2013 /PRNewswire/ --
Intended only for European media based outside of the UK
- 53% response rate observed in patients receiving 1 mg/kg nivolumab plus 3
mg/kg Yervoy concurrently (n= 9 of 17), the dose used in the Phase 3 trial; of these
responders all experienced at least 80% tumor shrinkage within 12 weeks
- Grade 3-4 treatment-related adverse events occurred in 53% of patients on the
concurrent-regimen and 18% of patients on the sequenced-regimen
- Data published today in New England Journal of Medicine
- Estimated survival data from this Phase 1 trial presented at 49th annual
meeting of the American Society of Clinical Oncology
- Phase 3 trial of nivolumab in combination with Yervoy in advanced melanoma
underway
Bristol-Myers Squibb today announced results from Study 004, a dose-ranging Phase 1 trial (n=86) evaluating the safety and anti-tumor activity of its investigational PD-1 receptor blocker, nivolumab, combined either concurrently (n=53) or sequentially (n=33) with Yervoy(R) (ipilimumab) in patients with advanced melanoma. In patients who received the dose used in the Phase 3 trial (1 mg/kg nivolumab + 3 mg/kg Yervoy) in the concurrent regimen, 53% (n= 9 of 17) had confirmed objective responses (OR) by mWHO criteria. In all nine of these responders, tumors shrank by at least 80% by the time of the first scheduled clinical treatment assessment (12 weeks), including three complete responses (CRs). In response-evaluable patients across all concurrent cohorts, 40% (n= 21 of 52) had an OR. Sixteen patients (31%) had tumor shrinkage of at least 80% by the time of the first clinical trial assessment, including five CRs. Responses were ongoing among 19 of 21 responders, with responses lasting from between 6.1+ to 72.1+ weeks at the time of data analysis. Clinical activity was observed in both the concurrent and sequenced regimens. Median overall survival has not been reached after approximately 13 months of median follow up in the concurrent cohorts. The estimated one-year survival rate across all concurrent cohorts was 82% (95% CI 69.0 - 94.4%).
Grade 3-4 treatment-related adverse events occurred in 53% of patients on the concurrent-regimen and 18% of patients on the sequenced-regimen. No treatment-related deaths were reported.
The data on nivolumab in combination with Yervoy were published today in the New England Journal of Medicine (NEJM). The estimated survival data were presented at the 49th Annual Meeting of the American Society of Clinical Oncology (Abstract # 9012).
"This is the first clinical trial to evaluate the safety and efficacy of combining two immune-checkpoint inhibitors, which are agents that target the pathways tumor cells use to evade recognition and destruction by the immune system," said Dr. Jedd D. Wolchok, Ludwig Center for Cancer Immunotherapy at Memorial Sloan-Kettering Cancer Center, presenter of the results and lead author on the New England Journal of Medicine paper. "The responses observed with the concurrent combination of nivolumab and ipilimumab in this Phase 1 trial of patients with advanced melanoma are very encouraging and support further research in randomized trials to evaluate the concept of combining agents that target different, but complementary, immune checkpoint pathways."
"An unmet medical need remains for many types of advanced cancer and Bristol-Myers Squibb is committed to leading advances in a new field of research, immuno-oncology, which is a rapidly evolving, innovative treatment modality centered on harnessing the natural capabilities of a patient's own immune system to fight cancer," said Brian Daniels, senior vice president, Global Development and Medical Affairs, Bristol-Myers Squibb. "Results from this Phase 1 study provide important insights about the potential of combinations in immuno-oncology and deepen our understanding of how cancer cells evade the immune system."
Bristol-Myers Squibb is developing a robust pipeline of compounds that directly modulate the immune system across a broad range of cancers. This includes the development program for nivolumab, which now consists of seven potentially registrational trials in three tumor types: non-small cell lung cancer (NSCLC), advanced renal cell carcinoma and advanced melanoma, including one in combination with Yervoy. The Phase 3 development program for Yervoy is also ongoing and includes Phase 3 trials in adjuvant melanoma, NSCLC and metastatic castrate-resistant prostate cancer.
Study 004 Results
Clinical activity was observed in both the concurrent and sequenced regimens. In the concurrent-regimen cohort, confirmed OR by mWHO criteria was observed in nine of 17 (53%) patients treated at a dose of 1 mg/kg nivolumab + 3 mg/kg Yervoy, the dose used in the Phase 3 trial. All nine responders achieved 80% or greater tumor reduction by the time of the first scheduled clinical trial assessment (12 weeks), including three CRs. In response-evaluable patients across all concurrent cohorts, OR was observed in 21 of 52 (40%) of patients. Sixteen patients (31%) had tumor shrinkage of at least 80% by the time of the first clinical trial assessment (12 weeks). Four patients experienced an OR by immune-related response criteria and two patients had unconfirmed responses. These six patients were not included in the calculation of objective response rates. Responses were ongoing among 19 of 21 responders, with responses lasting from between 6.1+ to 72.1+ weeks at the time of data analysis. The median overall survival has not been reached after approximately 13 months of median follow up in the combined concurrent cohorts. The estimated one-year survival rate across all concurrent cohorts was 82% (95% CI 69.0 - 94.4%).
In the sequenced-regimen cohorts, six of 30 patients achieved OR (20%) including one CR. Four (13%) patients achieved 80% or greater tumor reduction at 8 weeks. Three patients had immune-related responses and three patients had unconfirmed responses. These six patients were not included in the calculation of objective response rates. These findings showed that patients who did not respond to prior Yervoy responded to subsequent nivolumab.
AEs were more frequent in patients treated with the concurrent combination compared to each single agent. No treatment-related deaths were reported. In the concurrent-regimen, treatment-related AEs occurred in 93% of patients with the most common being rash (55%), pruritus (47%), fatigue (38%), and diarrhea (34%). Grade 3-4 treatment-related AEs were observed in 53% of patients, the most common being elevations in lipase (13%), aspartate aminotransferase (13%) and alanine aminotransferase (11%). Three patients had Grade 1-2 pneumonitis (6%) and one patient had Grade 3 pneumonitis (2%). In the sequenced regimen, treatment-related AEs occurred in 73% of patients with the most common being pruritus (18%) and lipase elevation (12%). Grade 3-4 treatment-related AEs were observed in 18% of patients with lipase elevation (6%) as the most common. One patient had Grade 1-2 pneumonitis (3%).
About Study 004
Study 004 is a dose-ranging Phase 1 study (n=86) evaluating the safety, antitumor activity and pharmacokinetics of nivolumab in concurrent and sequenced combination with Yervoy in patients with advanced melanoma.
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