Total submissions: 1
Submitter | RCV | SCV | Clinical significance | Condition | Last evaluated | Review status | Method | Comment |
---|---|---|---|---|---|---|---|---|
Wasik Lab, |
RCV003318466 | SCV004020302 | likely pathogenic | Malignant lymphoma, large B-cell, diffuse | 2023-07-25 | no assertion criteria provided | clinical testing | This variant was observed in a patient with DLBCL that presented in leukemic form, best classified as MCD/C5 DLBCL, an ABC subtype. Despite an initial good clinical response to BTK inhibitor ibrutinib, anti-CD20 antibody rituxan, alkylating agent bendamustine, and hematopoietic stem-cell transplant, the lymphoma relapsed, accompanied by morphologic and molecular evidence of disease progression. ETV6 is a transcription factor with a critical role in hematopoiesis and embryonic development, frequently mutated in hematologic malignancies. ETV6 c.33+1G>A was present at initial presentation, but was not detected in relapsed tumor. This variant changes a consensus splice donor site and is expected to affect protein structure. Although alterations in ETV6 are one of the hallmark features of the MCD/C5 group, its oncogenic role in DLBCL remains undefined (Marino et al. 2022). |