Final rule · 2025-11793

Medical Devices; Hematology and Pathology Devices; Classification of the Fluorescence In Situ Hybridization-Based Detection of Chromosomal Abnormalities From Patients With Hematologic Malignancies

The Food and Drug Administration (FDA, the Agency, or we) is classifying the fluorescence in situ hybridization-based detection of chromosomal abnormalities from patients with hematologic malignancies into class II (special controls). The special controls that apply to the device type are identified in this order and will be part of the codified language for the fluorescence in situ hybridization-based detection of chromosomal abnormalities from patients with hematologic malignancies' classification. We are taking this action because we have determined that classifying the device into class II (special controls) will provide a reasonable assurance of safety and effectiveness of the device. We believe this action will also enhance patients' access to beneficial innovative devices, in part by reducing regulatory burdens.