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ASLAN Pharmaceuticals Presents Late-Breaking Data From Phase 2 Study in China Testing Varlitinib in Second Line Biliary Tract Cancer at CSCO

ASLN

- Biliary tract cancer (BTC) patients treated with varlitinib plus capecitabine in second line achieved a response rate of 11% including two complete responses, median PFS of 2.7 months and OS of 5.8 months

- Patients on study appeared to present with more aggressive disease as only 10% of patients responded to first line gemcitabine-based treatment prior to enrolment
- Varlitinib plus capecitabine may provide a new therapeutic option for second line BTC patients

SINGAPORE, Sept. 19, 2019 (GLOBE NEWSWIRE) -- ASLAN Pharmaceuticals (Nasdaq:ASLN, TPEx:6497), a clinical-stage oncology and immunology focused biopharma company, today announced late-breaking topline data from a phase 2 study conducted in China testing varlitinib and capecitabine in second line BTC patients. The data was presented during an oral session by Dr Weijia Fang, Associated Chief Physician, MD, Department of Medical Oncology, Zhejiang University, at the 2019 Chinese Society of Clinical Oncology (CSCO) meeting in Xiamen, China.

The phase 2 study, which was closed before the completion of recruitment as previously announced, enrolled 62 patients in mainland China that had progressed on gemcitabine-based chemotherapy. The objective response rate in evaluable patients was 11% (including 2 patients with complete responses), the median progression free survival (PFS) was 2.7 months and overall survival (OS) was 5.8 months. 45% of patients were alive at 6 months and 35% at 12 months. Overall survival data was based on 31 events and is still maturing. The varlitinib plus capecitabine combination was well tolerated in this difficult to treat patient population.

ASLAN previously reported that patients enrolled into this study appeared to have performed significantly worse, prior to recruitment, in the first line setting than observed in published global studies, suggesting that patients in China may present with more aggressive and refractory disease. Based on patient records, the response rate in first line with gemcitabine-based chemotherapy of the patients recruited in ASLAN’s study was approximately 10% with a median PFS of 3.9 months. In comparison, the ABC-021 study (NEJM) that was conducted solely in the UK showed a first line response rate of 26% and PFS of 8 months for patients on gemcitabine and cisplatin.  

Professor Qin Shukui, Deputy Director of People’s Liberation Army 81 Hospital (Nanjing, China), commented:The varlitinib plus capecitabine combination was safe and well tolerated in Chinese BTC patients and could represent a new therapeutic option in this difficult to treat disease.”

Dr Mark McHale, Head of R&D, ASLAN Pharmaceuticals, said: “The current prognosis of patients with advanced biliary tract cancer remains extremely poor – there are no drugs approved globally to treat this disease, so this new data with varlitinib may offer an exciting new therapeutic option. Varlitinib is a potent inhibitor of the HER family of receptors which are all highly expressed in BTC. We are very encouraged to see that the response of patients to varlitinib and capecitabine in second line is similar to their response to gemcitabine-based therapy in first line. There is also a population that show durable responses with improved overall survival.”

Enrolment in a global pivotal study of varlitinib in second line BTC, the TreeTopp (TREatmEnT OPPortunity) study, was completed ahead of schedule in December 2018 and topline data is expected in the second half of 2019. ASLAN announced in January that the single-arm China study would be closed early as it would have read out – if fully recruited – after the TreeTopp study. If positive, ASLAN intends to use data from the TreeTopp study and the China study to submit a New Drug Application (NDA) in China, the US and other major geographies.

A copy of the abstract, titled: “JADETREE*: A phase 2A, single arm, multicenter, study of the panHER inhibitor varlitinib plus capecitabine in Chinese patients with advanced or metastatic biliary tract cancer (BTC),” is available on ASLAN’s website (www.aslanpharma.com).

Ends

Media and IR contacts

Emma Thompson
Spurwing Communications
Tel: +65 6571 2021
Email: ASLAN@spurwingcomms.com
Robert Uhl
Westwicke Partners
Tel: +1 858 356 5932
Email: robert.uhl@westwicke.com

About varlitinib (ASLAN001)

Varlitinib (ASLAN001) is a highly potent, oral, reversible, small molecule pan-HER inhibitor that targets the human epidermal growth factor receptors HER1, HER2 and HER4. These receptors can be mutated or overexpressed in many tumours, which can cause excessive proliferative activity and uncontrolled growth. Therefore, by inhibiting the activation of the HER receptors, varlitinib could inhibit proliferation and control tumour growth. Varlitinib has been granted orphan drug designation in the United States for gastric cancer and cholangiocarcinoma, a sub-type of biliary tract cancer, and was awarded orphan drug designation for the treatment of biliary tract cancer by the Ministry of Food and Drug Safety in South Korea.

About ASLAN Pharmaceuticals

ASLAN Pharmaceuticals (Nasdaq:ASLN, TPEx:6497) is a clinical-stage oncology and immunology focused biopharma company targeting cancers that are both highly prevalent in Asia and orphan indications in the United States and Europe. Led by a senior management team with extensive experience in global and regional development and commercialisation, ASLAN is headquartered in Singapore and has offices in Taiwan and China. ASLAN’s clinical portfolio is comprised of three product candidates which target validated growth pathways applied to new patient segments, novel immune checkpoints and novel cancer metabolic pathways. ASLAN’s partners include Array BioPharma, Bristol-Myers Squibb, Almirall and CSL. For additional information please visit www.aslanpharma.com.

Forward looking statements

This release contains forward-looking statements. These statements are based on the current beliefs and expectations of the management of ASLAN Pharmaceuticals Limited and/or its affiliates (the "Company"). These forward-looking statements may include, but are not limited to, statements regarding the timing, scope, progress and outcome of the Company’s on-going clinical studies, the Company’s business strategy, the Company’s plans to develop and commercialise its product candidates, the safety and efficacy of the Company’s product candidates, the Company’s plans and expected timing with respect to regulatory filings and approvals, and the size and growth potential of the markets for the Company’s product candidates. These forward-looking statements are based on management's current assumptions and expectations of future events and trends, which affect or may affect the Company’s business, strategy, operations or financial performance, and inherently involve significant known and unknown risks and uncertainties. Actual results and the timing of events could differ materially from those anticipated in such forward-looking statements as a result of these risks and uncertainties, which include, without limitation the risk factors described in the Company’s US Securities and Exchange Commission filings and reports (Commission File No. 001-38475), including the Company’s Annual Report on Form 20-F for the year ended December 31, 2018 filed with the US Securities and Exchange Commission on April 29, 2019.  

All statements other than statements of historical fact are forward-looking statements. The words “believe,” “may,” “might,” “could,” “will,” “aim,” “estimate,” “continue,” “anticipate,” “intend,” “expect,” “plan,” or the negative of those terms, and similar expressions that convey uncertainty of future events or outcomes are intended to identify estimates, projections and other forward-looking statements. Estimates, projections and other forward-looking statements speak only as of the date they were made, and, except to the extent required by law, the Company undertakes no obligation to update or review any estimate, projection or forward-looking statement.






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