Pioneering Cancer Detection

Our Story

X-ZELL is a fully integrated biotechnology company specialising in rare cell detection technology.

Established in 2009 with investment from Vichit Suraphongchai – one of the leading figures in Southeast Asian banking – and support from Thailand’s premier science university, Mahidol University, X-ZELL first made headlines when it was accepted into Y Combinator’s ‘W15 Winter Batch’.

The company used the opportunity to demonstrate the utility of its technologies to reliably detect prostate cancer at an early stage, before it spreads, securing a rare Honourable Mention and funding by US start-up guru, Paul Buchheit – the creator and lead developer of Gmail – as well as six other Silicon Valley-based angel investors.

Following a successful seed round, X-ZELL opened a Silicon Valley Office in Sunnyvale, California, in 2016, which is supported by X-ZELL’s Global R&D Hub in Bangkok, Thailand.

Our Mission

Our mission is to provide complete, clinically robust technologies to detect cancer before it spreads.

To ensure technology accessibility and service in all regions of the world. To build strong partnerships with medical professionals to ensure a meaningful contribution to the physical and mental well-being of all people.

That’s why in addition to our current capacity building efforts, X-ZELL’s technologies are already being made available to a limited number of universities. In addition to prostate cancer, they are currently also applied to detect tumor-derived circulating cells in breast cancer, ovarian cancer, endometrial cancer, colon cancer and liver cancer.

Our Team


Founding CEO

Sebastian Chakrit Punyaratabandhu Bhakdi


The mastermind behind X-ZELL’s rare-cell detection technologies and a firm advocate of health equality, Dr Sebastian Chakrit Punyaratabandhu Bhakdi studied at one of the world’s oldest and most renowned medical schools, the University of Freiburg (Germany). As a medical student, he took internships in Bangkok (Thailand), Lahti (Finland), Skopje (Macedonia), Nairobi (Kenya) and New York (USA), which drew his attention to health service accessibility and inequality early on.

After graduating with dissertation magna cum laude, the classically trained musician went on to work in paediatrics and emergency medicine before earning a Postgraduate Master’s Degree in International Health and Tropical Medicine at the Autonomous University of Barcelona. While still in Barcelona, he won a Malaria Research Fellowship from the German Research Foundation and was subsequently invited to join the Department of Pathobiology at Mahidol University in Bangkok, Thailand.

Soon after, Thailand set the backdrop for the creation of X-ZELL, which has allowed the father of three to follow his entrepreneurial aspirations while proactively pursuing his passion for technological innovation to provide access to quality health care worldwide.

Leadership Team

Johannes Hille


Prapat Suriyaphol

Head of IT

Bart van der Voort

Head of Engineering & QA

Sebastian Grote

Head of Marketing & Communications

Get in Touch

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© 2018 X-ZELL INC

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