On June 2, 2019 BerGenBio ASA (OSE: BGBIO) a clinical-stage biopharmaceutical company developing novel, selective AXL kinase inhibitors for multiple cancer indications, reported updated data from its Phase II clinical trial (BGBC008, NCT03184571) with bemcentinib and Merck’s anti-PD-1 therapy KEYTRUDA (pembrolizumab) in patients with advanced non-small cell lung cancer (NSCLC) at the 2019 annual meeting of the American Society of Clinical Oncology (ASCO) (Free ASCO Whitepaper) in Chicago, Illinois (31 May – 4 June 2019) (Press release, BerGenBio, JUN 2, 2019, View Source [SID1234536748]).
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At data cut off, 35 out of 46 enrolled patients were evaluable; 58% were AXL +ve, and 53% were PD-L1 negative (<1%TPS), and a further 39% were PD-L1 (1-49% TPS). An objective response rate of 40% was achieved in AXL +ve patients, irrespective of the patients PD-L1 score; and an overall response rate of 29% was achieved. The median survival rate of 12.2 months was observed at the time of data cut-off, significantly surpassing what has been shown historically in second line treatment with PD-1 inhibitor monotherapy.
The combination treatment of bemcentinib and pembrolizumab was overall well-tolerated; the most common adverse events included transaminase increase (35%), fatigue (30%), and diarrhoea (26%). No grade 5 treatment related adverse events were reported and all events were reversible.
Principal investigator Enriqueta Filip, Vall d’Hebron University Hospital, Barcelona
" Following the rapid uptake of checkpoint inhibitors in first-line lung cancer therapy, treatment options for NSCLC cancer patients that have not responded to anti-PD-1 therapies such as KEYTRUDA represent a significant unmet medical need. These data, which suggest that combination therapy with bemcentinib has the potential to enhance patient responses to these novel agents, particularly in patients with no or limited expression of PD-L1, is a very significant and encouraging development."
Richard Godfrey, Chief Executive Officer of BerGenBio, commented: "The clinical activity we are presenting here today surpasses what has been shown historically in previously-treated, PD-L1 low patients on PD-1 inhibitor monotherapy, and supports the hypothesis that AXL is implicated in the failure of anti-PD-L1 therapies. Further investigation is warranted and having recently extended the trial to include patients showing disease progression on checkpoint inhibitors, we will continue to test this hypothesis and look forward to providing further updates during 2019."
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About NSCLC
It is estimated that more than 230,000 new cases of lung cancer have been diagnosed in the US in 2018 and it is the leading cause of cancer deaths. 65% of non-small cell lung cancers (NSCLC) are of adenocarcinoma pathology. Although various treatments exist for NSCLC, they are often curtailed by acquired resistance to therapy and immune evasion. Novel treatments overcoming these mechanisms in NSCLC are urgently required.
About the BGBC008 trial
The BGBC008 trial is a Phase II open-label study of bemcentinib in combination with KEYTRUDA (pembrolizumab) in previously treated patients with advanced adenocarcinoma of the lung, run at centres in the US, UK, Spain and Norway. The objective of the trial is to determine the anti-tumour activity of this novel drug combination and responses will be correlated with biomarker status (including AXL kinase and PD-L1 expression).
Patients eligible for participation in Cohort A must have progressed on or after prior therapy excluding immunotherapy whereas patients in Cohort B will be actively progressing on a therapy regimen containing an anti-PD(L)-1 therapy.
Both cohorts follow a two-stage design, Cohort A has previously successfully progressed into the second stage after meeting its first efficacy endpoint. Cohort B will evaluate advancement into stage 2 after 13 patients have been assessed for response.
For more information please access trial NCT03184571 at www.clinicaltrials.gov.