Company: ADPT
Filing Date: 2025-03-03
Form Type: 10-K
Source: 0000950170-25-030913
Chunk: 15

Company: Adaptive Biotechnologies Corp
Filing Date: 2025-03-03
Form: 10-K
Item: Item 1
Chunk 15
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 Hematopoietic Cell Transplantation (auto-HCT) in Mantle Cell Lymphoma (MCL) Patients (pts) in First Complete Remission (CR) with Undetectable Minimal Residual Disease (uMRD): Initial Report from the ECOG-ACRIN EA4151 Phase 3 Randomized Trial (Abstract LBA6). Patients in CR with uMRD at 10⁻⁶ sensitivity by clonoSEQ in peripheral blood were randomized to receive either auto-HCT plus three years of maintenance rituximab (MR) or MR alone. Interim analysis, with a median follow-up of 2.7 years, showed no significant difference in OS between the two groups, suggesting that auto-HCT may be unnecessary for patients achieving deep remission as measured by highly sensitive MRD assessment.

We believe this clinical utility data shows that clonoSEQ is uniquely situated in MRD testing to help hematologists improve their ability to assess treatment response, predict long-term patient outcomes, monitor disease burden over time and detect potential relapse. Further, we believe that our clonoSEQ assay has the potential to accelerate the development of drugs in lymphoid cancers and enable treatment decisions which may lower payor cost through the discontinuation of costly drugs that are no longer needed.

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clonoSEQ Clinical Diagnostic Testing

Commercially Promoted Indications

Our clonoSEQ diagnostic test detects and monitors the remaining number of cancer cells that are present in a patient’s body during and after treatment, known as MRD. We believe clonoSEQ has broad applicability across all lymphoid malignancies, including ALL, CLL, MM, and Non-Hodgkins Lymphoma (“NHL”) conditions, such as DLBCL, MCL and cutaneous T cell lymphoma (“CTCL”).

In September 2018, clonoSEQ was granted marketing authorization from the FDA, under the de novo process, for patients with MM and ALL to monitor their MRD from bone marrow samples. In August 2020, the clonoSEQ label was expanded to include patients with CLL from bone marrow and blood samples. 

In December 2022, we launched commercial promotion of clonoSEQ as a CLIA-validated LDT to detect MRD in blood for patients with DLBCL by measuring circulating tumor DNA (“ctDNA”), which provides patients and clinicians with a powerful blood-based prognostic tool. We are advancing the regulatory strategy for our DLBCL test to support clinical adoption