SEC Filings

10-K
ARRAY BIOPHARMA INC filed this Form 10-K on 08/11/2017
Entire Document
 

outlines the median PFS (or "mPFS") results, as determined by both assessments, for COMBO450 versus vemurafenib, COMBO450 versus encorafenib, and encorafenib versus vemurafenib:
 
 
mPFS BICR
 
mPFS Local Review
COMBO450 vs. Vemurafenib
 
COMBO450
Vemurafenib
 
COMBO450
Vemurafenib
 
14.9 months
7.3 months
 
14.8 months
7.3 months
 
HR (95% CI): 0.54 (0.41-0.71); P<0.001 
 
HR (95% CI): 0.49 (0.37-0.64); P<0.001 
 
COMBO450 vs. Encorafenib
 
COMBO450
Encorafenib
 
COMBO450
Encorafenib
 
14.9 months
9.6 months
 
14.8 months
9.2 months
 
HR (95% CI): 0.75 (0.56-1.00); P=0.051 
 
HR (95% CI): 0.68 (0.52-0.90); P=0.006 
 
Encorafenib vs. Vemurafenib
 
Encorafenib
Vemurafenib
 
Encorafenib
Vemurafenib
 
9.6 months
7.3 months
 
9.2 months
7.3 months
 
HR (95% CI): 0.68 (0.52-0.90); P=0.007
 
HR (95% CI): 0.70 (0.54-0.91); P=0.008 

In this study, COMBO450 was generally well-tolerated, with a median duration of treatment of 51 weeks and median relative dose intensity for encorafenib and binimetinib of 100% and 99.6%, respectively. Grade 3/4 adverse events (or "AEs") that occurred in more than 5% of patients receiving COMBO450 were increased gamma-glutamyltransferase (GGT) (9%), increased blood creatine phosphokinase (CK) (7%) and hypertension (6%). The incidence of selected any grade AEs of special interest, defined based on toxicities commonly associated with commercially available MEK+BRAF-inhibitor treatments for patients receiving COMBO450 included: rash (23%), pyrexia (18%), retinal pigment epithelial detachment (13%) and photosensitivity (5%). Full safety results of COLUMBUS Part 1 were presented at the 2016 Society for Melanoma Research Annual Congress.

COLUMBUS Part 2 was designed specifically to assess the contribution of binimetinib to the combination of binimetinib and encorafenib by reducing the dose of encorafenib to 300mg in the combination arm to allow for a comparison of equal doses across arms. In COLUMBUS Part 2, the primary analysis compared PFS in patients treated with binimetinib 45mg twice daily plus encorafenib 300mg daily (COMBO300) to patients treated with encorafenib 300mg daily as a single agent. Top-line results showed the mPFS for patients treated with COMBO300 was 12.9 months compared to 9.2 months for patients treated with single agent encorafenib, with HR of 0.77 [95% CI 0.61-0.97, p=0.029]. COMBO300 was generally well-tolerated and reported dose intensity and AEs were consistent with COMBO450 results in COLUMBUS Part 1. Further results from COLUMBUS Part 2 will be presented at the ESMO Congress in September 2017 in Madrid, Spain (2017 ESMO).

BEACON CRC

BEACON CRC is a global Phase 3 trial of encorafenib and Erbitux® (cetuximab), with or without binimetinib, versus standard of care in patients with BRAF-mutant CRC who have previously received first-or second-line systemic therapy. Based on the attractive safety profile and with early encouraging clinical activity observed in the safety lead-in, the randomized portion of the trial was initiated. Data from the safety lead-in will be presented at 2017 ESMO.
 
The BEACON CRC trial was initiated based on results from a Phase 2 study including the combination of encorafenib and cetuximab in patients with advanced BRAF-mutant CRC, which were presented at the 2016 ASCO annual meeting. In this study median Overall Survival (or "OS") for these patients exceeded one year, which is more than double several separate historical standard of care published benchmarks for this population.

The primary endpoint of BEACON CRC trial is OS of the triplet therapy compared to the control arm. The secondary endpoints address efficacy of the doublet therapy compared to the control arm, and the triplet therapy compared to the doublet therapy. Other secondary endpoints include PFS, Objective Response Rate (or "ORR"), duration of response, safety and tolerability. Health related quality of life data will also be assessed.  The trial will be conducted at over 250 investigational sites in North America, South America, Europe and the Asia Pacific region. Patient enrollment is expected to be completed in 2018.

Array is the global sponsor of the study. Pursuant to the PF Agreement with Pierre Fabre, Pierre Fabre has elected to co-fund 40% of the cost of the BEACON CRC trial. Merck KGaA, Darmstadt, Germany, is the owner of Erbitux

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