Alex F. Herrera, MD, on Previously Untreated DLBCL: Circulation Tumor DNA and Risk Profiling
2022 ASH Annual Meeting and Exposition
Alex F. Herrera, MD, of the City of Hope National Medical Center, discusses results from the POLARIX study, which showed that circulating tumor DNA (ctDNA) analysis has prognostic value for patients with previously untreated diffuse large B-cell lymphoma. Patients who did not achieve 2.5 or greater log-fold change and/or did not have ctDNA clearance following one cycle of polatuzumab vedotin along with rituximab, cyclophosphamide, doxorubicin, and prednisone had inferior outcomes than those who did. Early changes in ctDNA levels may be of use in risk-adapted trial designs to identify patients in need of alternative treatment. (Abstract 542).
The ASCO Post Staff
Jorge E. Cortes, MD, of Georgia Cancer Center at Augusta University, discusses new findings on vodobatinib, which was administered to patients with chronic-phase Philadelphia chromosome–positive chronic myeloid leukemia (CML) and appeared to be efficacious and safe in people who had received therapy with two or three prior tyrosine kinase inhibitors (TKIs). Vodobatinib remains a potential option for these highly refractory patients. A phase II study (NCT02629692) of vodobatinib is ongoing in CML patients whose disease has failed to respond to three or more TKIs, including ponatinib (Abstract 84).
The ASCO Post Staff
Jennifer R. Brown, MD, PhD, of Dana-Farber Cancer Institute, discusses phase III findings of the ALPINE study, which showed that zanubrutinib is more efficacious and better tolerated than ibrutinib as a treatment for patients with relapsed or refractory chronic lymphocytic leukemia (CLL) and small lymphocytic lymphoma (SLL). In this first head-to-head comparison of the two BTK inhibitors, the superior progression-free survival of zanubrutinib was observed across all major subgroups, including high-risk patients (Abstract LBA-6).
The ASCO Post Staff
Joseph Schroers-Martin, MD, of Stanford University, discusses immunogenomic features reflecting divergent biology in posttransplant lymphoproliferative disorders (PTLD). These include evidence of mismatch repair defects in Epstein-Barr virus–positive PTLD, tumor microenvironment depletion, and MYC pathway enrichment in certain patients (Abstract 72).
The ASCO Post Staff
Paolo F. Caimi, MD, of the Taussig Cancer Institute, Cleveland Clinic, discusses new findings showing that patients with diffuse large B-cell lymphoma (DLBCL) who achieve a complete response after salvage therapy with rituximab, ifosfamide, carboplatin, and etoposide (R-ICE) can achieve long-term disease control, regardless of the time to relapse from initial therapy, particularly if they proceed to autologous stem cell transplant (ASCT). These results suggest that second-line chemotherapy followed by ASCT and/or CAR T-cell therapy for chemosensitive and chemorefractory patients may maximize patient outcomes, regardless of time to relapse (Abstract 156).
The ASCO Post Staff
Stephen M. Ansell, MD, PhD, and Patrizia Mondello, MD, PhD, both of the Mayo Clinic, discuss the 20% of patients with follicular lymphoma (FL) who relapse early and experience a poor prognosis. The researchers found that FLs with high levels of IRF4 expression are associated with a suppressive tumor microenvironment, and selective IRF4 silencing restores antilymphoma T-cell immunity. Further investigation is warranted to identify the mechanisms by which IRF4 controls tumor immunity to develop precision therapies for this population (Abstract 70).
