Adaptive Biotechnologies launches assay enhancements for clonoSeq

Adaptive Biotechnologies (ADPT) has launched an upgraded version of its clonoSEQ assay for measurable residual disease detection in diffuse large B-cell lymphoma using circulating tumor DNA. The enhanced clonoSEQ assay, which incorporates an optimized DNA extraction methodology and maximizes sample input, delivers a 7-fold increase in sensitivity. The assay leverages the same powerful technology as prior versions, detecting MRD by reading the full immune receptor sequence of the malignant B cells rather than relying on individual point mutations. Maintaining this proprietary approach enables improvements in sensitivity while preserving the exquisite specificity that minimizes risk of overtreatment due to false positives. The enhanced assay was previously made available for research use in November 2023 and is already being incorporated into both biopharma-sponsored and investigator-initiated prospective trials. Data generated using this assay and presented at ASH 2024 by Bond and colleagues demonstrated that in patients for which MRD was assessed by clonoSEQ, MRD negativity post-cycle six was highly prognostic of progression-free survival.