ASLAN Pharmaceuticals (NASDAQ:ASLN, TPEx:6497), a clinical-stage biopharmaceutical company targeting cancers that are both highly prevalent in Asia and orphan indications in the United States and Europe, today announced an update on its global placebo-controlled, double-blind phase 2 clinical study of varlitinib as a first-line therapy in HER1/HER2 co-expressing advanced or metastatic gastric cancer patients, comparing varlitinib plus mFOLFOX6 to placebo plus mFOLFOX6. In the recently completed study, varlitinib did not meet the primary endpoint of significant reductions in tumour size after 12 weeks of treatment.

As quoted in the press release:

Based on independent central review, patients treated with varlitinib plus mFOLFOX6 had an average tumour shrinkage of 22.0% after 12 weeks compared to 12.5% for patients treated with mFOLFOX6 alone. This difference did not reach statistical significance. Upon review of 17 progression free survival (PFS) events to date, there was a trend towards an improvement in PFS in patients treated with varlitinib.

Overall patient characteristics were well-balanced between the two arms with the exception of baseline ECOG status. The proportion of patients with the best performance status (ECOG of 0) was substantially higher in the control arm (46.2%) than in the varlitinib arm (19.2%).

Varlitinib in combination with mFOLFOX6 was very well-tolerated with 73.1% of patients taking varlitinib experiencing a grade 3 or higher adverse event compared to 88.5% of patients taking mFOLFOX6 alone.

Click here to read the full press release.