A 52-year-old male underwent whole-exome sequencing (WES) for amyotrophic lateral sclerosis (ALS). While no germline alterations relevant to his ALS were detected, multiple de novo mutations associated with hematological malignancy were unexpectedly discovered in ~20% of his sequencing reads, suggesting that these were somatic alterations. Review of the patient’s medical records revealed a persistently low white blood cell count. As a result of these incidental findings, a bone marrow biopsy was performed to assess for possible malignancy.
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Jaime Lopes, Ph.D. Resident, Laboratory Genetics and Genomics Mayo Clinic |
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Linda Hasadsri, M.D., Ph.D. Consultant, Lab Genetics/Genomics Mayo Clinic Assistant Professor of Laboratory Medicine and Pathology Mayo Clinic College of Medicine |