3billion — Advancing Rare Disease Diagnosis Through Genomics
We are a team of scientists, clinicians, and educators committed to making genetic testing more accessible, understandable, and actionable for physicians worldwide.

At 3billion, we specialize in rare disease diagnostics powered by next-generation sequencing (NGS), deep variant interpretation, and cutting-edge reanalysis tools. But what drives us most is the belief that every patient deserves a timely and accurate diagnosis—no matter how rare their condition might be.

Our courses are designed and taught by leading experts in clinical genomics who bring years of experience from top hospitals, research institutions, and diagnostic labs. We’re not just here to teach you technical skills—we’re here to help you feel confident and supported in integrating genomics into your medical practice.

Meet Your Instructors:

Dr. Hane Lee, PhD
Chief Genomics Officer at 3billion | Former Professor at UCLA
Dr. Hane Lee is a clinical genomics expert with over a decade of experience in rare disease diagnostics. At UCLA, she led exome-based analyses for more than 3,000 patients and contributed to the Undiagnosed Disease Network (UDN). Now at 3billion, she leads efforts to improve the speed and accuracy of genetic diagnoses. She’s passionate about making advanced genomic testing more accessible and empowering physicians through education.

Dr. Go Hun Seo, MD, PhD
Chief Medical Officer at 3billion
Dr. Seo leads 3billion’s medical genetics team, bringing experience as a pediatrician and clinical geneticist from Asan Medical Center. She played a pivotal role in building 3billion’s AI-powered interpretation pipeline, which has supported diagnoses for over 70,000 patients globally. She is deeply committed to improving care through precision medicine and innovation.

Dr. Seung Woo Ryu, PhD
Lead Clinical Genomics Scientist at 3billion
Dr. Ryu specializes in the diagnosis of rare genetic diseases, with deep expertise in structural variant detection and interpretation. He works closely with physicians to clarify complex cases, and is driven by a desire to bring hope and understanding to patients navigating challenging diagnostic journeys.

Gina Kim, M.S.
Clinical Genomics Scientist at 3billion
With a background in cancer genomics, psychiatric genetics, and molecular biology, Gina brings research depth to her role at 3billion. She is passionate about using science to create meaningful impact, and is dedicated to helping patients with rare diseases through precise and thoughtful analysis.

Seokhui Jang, M.S.

Clinical Genomics Scientist at 3billiion

With a background in molecular biology, Seokhui has experience identifying genes linked to dementia and studying those involved in neurodevelopment and behavior. She works to provide clear and fast diagnoses for patients with rare diseases.

Sohyun Lee, M.S.
Clinical Genomics Scientist at 3billion
Combining her molecular biology background with a focus on RNA-seq and microRNA research, Sohyun supports physicians by analyzing sequencing data and interpreting genetic results. Her mission is to help shorten the diagnostic odyssey for patients and provide clinicians with the tools to care with confidence.

Dr. Dongseok Moon, PhD
Clinical Genomics Scientist at 3billion
Dr. Moon’s background in bioengineering informs his work in automating reanalysis and optimizing variant interpretation pipelines. He’s committed to improving diagnostic efficiency for patients with rare genetic disorders using advanced computational tools and AI.

Dr. Soungyub Ahn, PhD
Clinical Genomics Scientist at 3billion
With expertise in neurogenetics and developmental biology, Dr. Ahn brings a deep understanding of rare neurological conditions. At 3billion, he focuses on refining diagnostics and hopes to enhance the speed and accuracy of results—supporting patients and families at every step.