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AstraZeneca Provides Update On Phase III Trial Of Selumetinib In Non-Small Cell Lung Cancer
The results showed that the trial did not meet its primary endpoint of progression-free survival (PFS), and selumetinib did not have a significant effect on overall survival (OS). The adverse event profiles for selumetinib and docetaxel were consistent with those seen previously.
SELECT-1 is an international trial with 510 randomised patients in over 200 centres. Patients received either selumetinib (75mg, orally, twice daily) or placebo in combination with docetaxel (intravenously, 75mg/m2, on day one of every 21-day cycle).
Selumetinib is being explored as a treatment option in registration-enabling studies in patients with differentiated thyroid cancer where the treatment received Orphan Drug Designation, and patients with neurofibromatosis type 1, a genetic disorder that causes tumours to grow along nerve tissue.1
About Array's Agreement with
About KRASm non-small cell lung cancer
KRAS is one of the most common genetic mutations in NSCLC, and is found in 30% of patients.2 Adenocarcinomas make up the majority of cases with KRAS mutations, which are less common in squamous cell NSCLC.2,3
KRAS mutations are associated with activation of the RAS-ERK signalling pathway, which drives tumour growth.3
About selumetinib (AZD6244, ARRY-142886)
Selumetinib is an oral, potent and highly selective MEK 1/2 inhibitor. MEK 1/2 are critical components of the RAS-ERK pathway, activation of which is implicated in driving cancer growth and progression, including in patients with KRASm NSCLC.4,5
SELECT-1 (NCT01933932) is a Phase III, double-blind, randomised, placebo-controlled trial. It is designed to assess the efficacy and safety of selumetinib (75 mg twice daily, given orally on a continuous schedule) in combination with docetaxel (75 mg/m2 intravenously on day 1 of every 21-day cycle), compared with matched placebo in combination with docetaxel (same schedule) in 510 patients receiving 2nd-line treatment for KRASm locally advanced or metastatic NSCLC (stage IIIB-IV), confirmed by central testing of tumour tissue using the cobas® KRAS Mutation Test (Roche Molecular Systems).3
The primary endpoint is PFS, and secondary endpoints include OS, objective response rate (ORR), duration of response (DoR), and safety and tolerability.3
By harnessing the power of four scientific platforms -- immuno-oncology, the genetic drivers of cancer and resistance, DNA damage response and antibody drug conjugates -- and by championing the development of personalised combinations,
Array BioPharma Forward-Looking Statement
This press release contains forward-looking statements within the meaning of the Private Securities Litigation Reform Act of 1995, including statements about the future development plans of selumetinib and the timing of the announcement of further results of clinical trials for selumetinib, expectations that events will occur that will result in greater value for Array, and the potential for the results of ongoing preclinical and clinical trials to support regulatory approval or the marketing success of selumetinib. These statements involve significant risks and uncertainties, including those discussed in our most recent annual report filed on Form 10-K, in our quarterly reports filed on Form 10-Q, and in other reports filed by Array with the
2 Dearden S et al. Mutation incidence and coincidence in non small-cell lung cancer: meta-analyses by ethnicity and histology (mutMap). Ann Oncol. 2013 Sep;24(9):2371-6.
3 Jänne PA et al. Study design and rationale for a randomized, placebo-controlled, double-blind study to assess the efficacy and safety of selumetinib in combination with docetaxel as second-line treatment in patients with KRAS-mutant advanced non-small cell lung cancer (SELECT-1).
4 Davies BR, et al. AZD6244 (ARRY-142886), a potent inhibitor of mitogen-activated protein kinase/extracellular signal-regulated kinase kinase 1/2 kinases: mechanism of action in vivo, pharmacokinetic/pharmacodynamic relationship, and potential for combination in preclinical models. Mol Cancer Ther 2007;6:2209–19.
5 Roberts PJ, Stinchcombe TE. KRAS Mutation: Should We Test for It, and Does It Matter? J Clin Oncol 2013;31(8):1112–21.
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