Featured – Genetics

Wei Shen, Ph.D., and Rhianna Urban, M.S., CGC, explain how Mayo Clinic Laboratories' gene panel establishes a diagnosis of Lynch syndrome, which heightens the risk for several cancers. Test results can guide targeted cancer surveillance for patients and their families.

Since 1992, cases of colorectal cancer have been on a slow decline, yet 52,550 people died from it in 2023. At Mayo Clinic, a cutting-edge menu of both germline (inherited genetic alterations) and somatic (tumors due to non-inherited genetic alterations) testing are two critical tools helping to improve targeted treatments for colorectal and other common gastrointestinal cancers.

Dr. Linda Hasadsri’s firsthand encounter with the genetic tests she’s helped develop has provided rare insight into testing quality and implications, enhancing their ability to advocate for the value of testing and infusing their work with deep empathy.

Recognizing the powerful role genes can play in diagnosing illness and guiding treatment, the Division of Laboratory Genetics and Genomics at Mayo Clinic spearheaded a testing expansion, implementing and upgrading more than 60 advanced sequencing and biochemical assays in 2023 and planning for even more this year.

Multiple doctors and multiple examinations could not figure out why Lauri Sieben had spent much of her life “never feeling quite right” physically. Fortunately for Lauri, that changed after her daughter Christy began working as a genetic counselor in Mayo Clinic’s Molecular Technologies Laboratory. After seeing similarities between the patient testing she was performing for the lab and the physical symptoms being experienced by her mom, Christy took a leading role in getting Lauri to undergo molecular and biochemical testing at Mayo Clinic. The results of that testing not only provided much-needed answers, but a promising path forward for Lauri.