VANCOUVER, Wash., June 14, 2021 --- AbSci, the synthetic biology company unlocking the potential of proteins as next-generation therapeutics, today announced the acquisition of Totient, a discovery company invested and incubated by Viva Biotech (01873.HK), harnessing human immune responses to identify novel antibodies and their therapeutic targets. This acquisition adds antibody and target discovery technology to AbSci's platform for therapeutic protein design and biomanufacturing optimization.

The development of comprehensive predictive models that encompass the interactions of key proteins related to immune responses in different disease states is an enormous opportunity for biologic drug development. Building on Totient's ability to identify fully-human antibodies from patients who demonstrate differentiated immune responses, AbSci expects to generate a large collection of natural human antibodies and target antigens that it may leverage for therapeutic protein design as well as deep learning model training.To date Totient has reconstructed more than 4,500 antibodies from over 50,000 patients and has de-orphaned a collection of promising antibodies by identifying and validating their target antigens. AbSci's high-throughput single cell protein expression systems and assays offer a complementary platform for rapidly and systematically de-orphaning the computationally derived antibody sequences in Totient's growing library.

The disease targets identified may be used in the discovery of new therapeutics, including those based on paired antibody sequences. Additionally, the data captured from billions of single cell experiments offer training sets for AbSci's Denovium Engine™ deep learning models."Totient's innovative work identifying disease-relevant molecules has exciting therapeutic potential," commented Sean McClain, founder and CEO of AbSci. "We believe that the combination of the Totient technology with AbSci's platform, including our Denovium AI, provides us the framework and data to enable in silico targeted drug design, and ultimately achieve our goals of making the best medicines available to patients in need.""

Together, AbSci and Totient are much more than the sum of our parts, with clear opportunities for synergy of our platforms and technologies," said Deniz Kural, PhD, co-founder and CEO of Totient. "Our computational biology technology allows us to identify thousands of new antibodies and other categories of proteins, and with AbSci, we look forward to scaling our target discovery capabilities to comprehensively de-orphan antibodies and validate new opportunities for drug development.

"Dr. Han Dai, Chief Business Officer and Head of Investment of Viva Biotech said: “Starting in March 2019, Viva utilized a "cash + equity-for-service (EFS)" model to invest in Totient Inc. We fostered close cooperation with Totient's team which was a very fruitful experience for Viva. AbSci’s acquisition of Totient also further demonstrates the successful operability of Viva’s EFS model and provides an excellent example for an investment exit under this cooperative model. Totient has created a unique platform to screen antibody drugs from a tumor tissue database and in combination with AbSci’s powerful Denovium AI platform, Totient’s target discovery capabilities will be further enhanced. Viva is looking forward to seeing the new drug development opportunities created by AbSci's acquisition of Totient."

About Viva Biotech

Viva Biotech’s mission is to become a cradle for innovative biotechnology companies from around the world. We have developed a scalable business model combing the conventional cash-for-service (CFS) model and its unique equity-for-service (EFS) model. Under the CFS model, the Group provides one-stop service for novel drug discovery and production to global pharmaceutical clients. EFS business is dedicated to investing globally in biotech innovation with novel solutions to unmet medical needs across multiple therapeutic areas. As of December 31, 2020, Viva Biotech had provided drug discovery and production services to 1,252 pharmaceutical clients worldwide, and incubated/invested 67 biotech companies.Viva Biotech has already completed the very substantial acquisition with Langhua Pharmaceutical, a CDMO factory and SYNthesis, a chemistry CRO company. We will continue to construct the one-stop service platform for novel drug discovery and production, and assist global biotech innovators to perusing the transform from “0” to “1”. For more information, please visit

About Totient

Totient is enabling next generation cell therapies and other therapeutic modalities by building the largest library of human-derived antibodies to novel and known tissue-specific antigens. Totient reconstructs antibodies from patients experiencing exceptional immune responses. For more information, visit

About AbSci

AbSci is the AI-powered synthetic biology company unlocking the potential of proteins as the next generation of therapeutics. We built our Integrated Drug Creation™ Platform to accelerate discovery of novel biotherapeutic drug candidates and generation of the cell lines to manufacture them in a single efficient process. Biotech and pharma innovators partner with us to develop new protein-based drugs, including those that may be impossible to make with other technologies. Our goal is to enable the creation of better medicines by Translating Ideas into DrugsTM. For more information, please visit