San Jose, California. Twelve people and a database of half a million genomes. A software company that decided the messiest problem in medicine - which drug is right for which person - was, at bottom, an engineering problem.
Here is a fact that sounds like a paradox: modern medicine is designed for a patient who does not exist. The "average" patient - the one for whom the standard dose and the standard drug were calibrated - is a statistical fiction. Real people carry real genomes, and those genomes decide, quietly and sometimes catastrophically, whether a medicine heals them or harms them. Cipherome is a company that took this discomfort seriously and turned it into software.
The premise is simple enough to fit on a napkin and hard enough to have occupied the company since 2015: adverse drug reactions - the technical name for "this medicine hurt me" - are one of the most expensive, least discussed problems in healthcare. They fill hospital beds. They cost billions. And a meaningful share of them are, in principle, predictable, because the information sits in the patient's DNA. The catch is that reading that information at the scale of an entire population, and doing it fast enough to matter, is genuinely difficult. This is the difficulty Cipherome sells its way out of.
Cipherome was co-founded by Ju Han Kim, a professor and chair of biomedical informatics at Seoul National University's College of Medicine who did an earlier stint teaching the same subject at Harvard Medical School. Ilsong Lee runs the company as chief executive. That pairing - a deep academic bench in Korea, a commercial operation in Silicon Valley - is not incidental. It is arguably the whole company. Precision medicine needs three things that rarely live under one roof: rigorous genomic science, software that people will actually use, and access to real clinical data. Cipherome's structure is an attempt to hold all three at once.
Each individual deserves the best medicine.
You can tell a lot about a company from the sentence it repeats. Cipherome's is: each individual deserves the best medicine. It is the kind of line that could be corporate wallpaper, except that in Cipherome's case the entire product architecture bends toward it. If you actually believe that every patient deserves a drug matched to their genome, then you have to solve the boring, enormous problem underneath it - which is data. And so the company's flagship product is, somewhat unexpectedly for a biotech, a data-analysis platform.
That platform is called COMPASS, and its pitch is refreshingly unromantic. Researchers who work with clinical and genomic data spend an enormous fraction of their time not on discovery but on plumbing: cleaning data, reformatting it, wrangling incompatible standards, writing one-off scripts. COMPASS is built to make that plumbing disappear. It ingests biobank, electronic health record, and clinical trial data; it lets a researcher build a patient cohort, pull the relevant clinical and genomic fields, explore the data visually, run statistics, and even train a machine-learning model - all without writing a line of code.
The detail that gives the product credibility is its origin story. COMPASS was not dreamed up by a product committee; it was built by Cipherome's own researchers because they were drowning in the mechanical steps of analyzing UK Biobank data. UK Biobank is a British research resource containing detailed genomic and health data on roughly 500,000 participants - a treasure and a logistical nightmare in equal measure. The company also wired COMPASS to MIMIC-IV, a widely used critical-care database, using OMOP - a common data model that lets otherwise incompatible datasets speak the same language. In other words, the tool exists because its makers needed it first. That is usually a good sign.
Transform your data into discoveries.
If COMPASS is the workbench, Xentinel is the flagship idea. Xentinel is Cipherome's personalized drug-safety and biomarker-discovery platform - a trademarked system (the company holds U.S. registration No. 6,096,625) that uses machine learning to predict which drugs are risky for a given patient. Here the company makes a choice that matters more than it might seem: Xentinel is built around explainable AI. It does not merely output a risk score. It shows the genomic reasoning behind it.
This is not a technical footnote; it is a commercial necessity. A clinician is not going to change a prescription because a black box told them to. In high-stakes domains, an answer you cannot interrogate is an answer you cannot use. Cipherome's insistence on explainability is a bet that in medicine, transparency is not a feature you add later - it is the price of admission. A model that cannot show its work is, for a prescribing doctor, worse than useless.
The company put this to the test in an unusually deliberate way. Its Xentinel Lighthouse pilot focused on Hispanic and Latinx patients in South Texas - a population historically underrepresented in genomic research. That underrepresentation is not a minor gap. Precision medicine only works if the reference data reflects the people being treated; a model trained overwhelmingly on one ancestry will quietly fail others. Choosing an underrepresented group for a flagship pilot is, in that light, less an act of charity than an act of scientific hygiene. The reference set has to look like the patients.
There is a quieter reason a genomics company sells a data platform, and it has to do with how money actually moves in healthcare. Selling a diagnostic directly to patients is slow, regulated, and reimbursement-dependent. Selling a tool to the researchers, hospitals, and pharmaceutical companies who already have the data - and the budgets - is a cleaner path. COMPASS is, in that sense, a business-model decision as much as a scientific one. It meets its customers where they already work: inside biobanks, electronic health record systems, and clinical trials, on their own servers or in their own clouds. The on-premises option matters more than it sounds, because health data is jealously guarded and rarely allowed to leave the building.
This also explains the emphasis on no-code. The scarce resource in genomic research is not data - there is an ocean of it - but people who can wrangle it. Skilled bioinformaticians are few, expensive, and already booked. A platform that lets a clinician-researcher run a cohort query or a genome-wide association study without a programmer sitting beside them is, functionally, a way to multiply expertise. Cipherome is not selling a smarter scientist. It is selling a way to make every existing scientist reach further. In a field bottlenecked by talent, that is the more scalable bet.
A useful way to read a young biotech is by its collaborators, because partnerships are where ambition meets a real clinical decision. Cipherome's list is instructive. In 2021 it partnered with DHR Health on personalized medicine for patients undergoing percutaneous coronary interventions - the stents-and-catheters end of cardiology, where getting a blood-thinner regimen wrong carries immediate consequences. In 2022 it joined the American Heart Association's Center for Health Technology & Innovation Innovators' Network, and signed a memorandum of understanding with Seoul National University Bundang Hospital for cooperation in personalized medicine. Each of these is a place where genomic prediction has to survive contact with an actual patient.
The funding tells a compatible story. Cipherome closed a Series B in early 2022 - roughly $16.35 million in the latest round, with total capital across rounds reported in the high teens to low twenties of millions depending on the tracker. The investor roster includes InterVest, Nautilus Venture Partners, Medivate Partners, Signite Partners, and - notably - GC Pharma, one of Korea's larger pharmaceutical firms. A strategic pharma investor on the cap table is the kind of validation that money alone does not buy: it suggests the people who actually make drugs think Cipherome's approach to using them is worth understanding.
COMPASS empowers researchers to accelerate their work, helping achieve breakthroughs that make our world healthier, sooner.
It is worth being precise about scale, because precision is the whole point. Cipherome is not a household name and does not pretend to be one. It is a roughly twelve-person company competing in a field that includes far larger players in clinical genomics and healthcare analytics. What it has instead of size is focus: two products, wired to the biggest biobanks in the world, aimed at a single expensive problem. In a sector that often mistakes breadth for progress, that discipline is the interesting part. A small team that refuses to build ten things is making a bet that the one thing is hard enough.
The honest uncertainty is the one that hangs over all of precision medicine: whether the science and the software can scale from promising pilots to routine clinical practice, and whether the economics reward getting a prescription right the first time. Cipherome's answer is to attack the bottleneck it understands best - the gap between a mountain of genomic data and a usable, explainable answer. If that gap is really the thing standing between patients and personalized treatment, then a no-code platform and an explainable model are not modest tools. They are the whole game. Cipherome is betting they are.
An end-to-end, no-code platform for transforming, querying, and analyzing clinical and genomic data. Build cohorts, extract fields, visualize, run statistics and GWAS, and train ML models - on-premises or in the cloud.
Flagship · 2024A personalized drug-safety and biomarker-discovery platform using explainable AI to predict adverse drug reactions and personalize treatment - showing the genomic reasoning, not just a score.
Trademarked · 2020A commercial pilot of the Xentinel platform focused on Hispanic/Latinx patients in South Texas, guiding personalized prescribing for an underrepresented population.
Pilot · 2021Professor and Chair of Biomedical Informatics at Seoul National University College of Medicine; formerly an assistant professor of biomedical informatics at Harvard Medical School. The academic spine of the company.
Leads Cipherome's commercial operation from San Jose, connecting the company's genomic science to hospitals, biobanks, and pharmaceutical partners.
Ju Han Kim and colleagues start the company to tackle adverse drug reactions through clinical genomics.
The personalized drug-safety and biomarker-discovery platform is trademarked with the USPTO.
Cipherome partners with DHR Health on personalized medicine for coronary-intervention patients and launches the Xentinel Lighthouse pilot in South Texas.
Closes a ~$16.35M Series B, joins the American Heart Association's Innovators' Network, and signs an MOU with SNU Bundang Hospital.
Cipherome positions COMPASS as its flagship no-code clinical and genomic data-analysis platform.
Cipherome is a clinical genomics and bioinformatics company that builds software to personalize drug treatment and reduce adverse drug reactions. Its main products are the COMPASS data-analysis platform and the Xentinel drug-safety platform.
COMPASS is Cipherome's no-code platform for transforming, querying, and analyzing clinical and genomic data - including cohort building, visualization, statistics, GWAS, and AI model training - deployable on-premises or in the cloud.
Cipherome was founded in 2015. Ju Han Kim, a biomedical informatics professor at Seoul National University, is a co-founder, and Ilsong Lee serves as CEO.
Cipherome has raised roughly $16-23M across rounds, with a Series B of about $16.35M closed in 2022. Investors include GC Pharma, InterVest, Nautilus Venture Partners, Medivate Partners, and Signite Partners.
Cipherome is headquartered in San Jose, California, with research ties to Seoul National University in Korea.
Search Cipherome's channels and precision-medicine conference archives for COMPASS demos and pharmacogenomics talks.
Cipherome has exhibited at the Precision Medicine World Conference. Look for founder and executive sessions on adverse drug reactions and explainable AI.