Pretreatment C-reactive Protein to Albumin Ratio Predicts Clinical Outcomes in Patients with Peripheral T-cell Lymphoma

Peripheral T-cell lymphoma (PTCL) is an aggressive and heterogenous T-cell lymphoid malignancy. The prognostic value of C-reactive protein-to-albumin ratio (CAR) has never been assessed in PTCL. This study retrospectively reviewed the medical records of 76 patients diagnosed with various subtypes of PTCL. The value of 0.794 was identified as the most discriminative point of CAR, and clinical outcomes, including response rate, overall survival (OS), and progression-free survival (PFS), were compared between the high (>0.794, n=25) and low (≤0.794, n=51) CAR groups. After induction therapy, complete response was achieved in 39 patients (76.5%) and 8 patients (32.0%) in the low and high CAR groups, respectively (p<0.001). During the median follow-up of 57.5 months, the high CAR group had significantly worse 5-year PFS (6.6% vs. 43.8%, p<0.0001) and 5-year OS (20.2% vs. 62.2%, p<0.0001) rates. With adjustment for the International Prognostic Index (≥3), Prognostic Index for PTCL-unspecified (≥3), and T cell score (≥2), high CAR remained a significant prognostic factor for PFS (hazard ratio [HR]: 4.01, 95% confidence interval [CI] 2.04–7.86, p<0.001) and OS (HR: 2.97, 95% CI: 1.33–6.64, p=0.008). CAR might play a complementary role in predicting prognosis in patients with PTCL, considering its simplicity, objectivity, and easy accessibility.

Cyclin D1 expression in Peripheral T-Cell Lymphoma: A report of 2 cases

: Peripheral T-cell lymphomas (PTCLs) represent a heterogeneous group of non-Hodgkin's lymphomas (NHL), characterized by poor outcome, accounting approximately for 10%-15% of all non-Hodgkin lymphomas in the western countries, and with a higher prevalence in Asia. Cyclin D1 immunoreactivity is characteristically seen in mantle cell lymphoma. It is also observed in hairy cell leukemia, plasma cell myeloma and a proportion of diffuse large B-cell lymphomas, however its expression in peripheral T-cell lymphoma is rarely recorded. : We report two cases of peripheral T-cell lymphoma not otherwise specified with heterogeneous nuclear Cyclin D1 immunohistochemical overexpression, due to gene copy gain, a phenomenon similar to that observed in Mantle Cell Lymphoma.: Cyclin D1 expression can be seen in PTCLs, besides mantle cell lymphoma, hairy cell leukemia and plasma cell myeloma and underline the importance of molecular biology integration tests as a diagnostic tool to escape the pitfall.

Venetoclax Shows Low Therapeutic Activity in BCL2-Positive Relapsed/Refractory Peripheral T-Cell Lymphoma: A Phase 2 Study of the Fondazione Italiana Linfomi

Patients with relapsed/refractory (R/R) peripheral T-cell lymphoma (PTCL) have a poor prognosis, with an expected survival of less than 1 year using standard salvage therapies. Recent advances in our understanding of the biology of PTCL have led to identifying B-Cell Lymphoma 2 (BCL2) protein as a potential therapeutic target. BLC2 inhibitor venetoclax was investigated in a prospective phase II trial in patients with BCL2-positive R/R PTCL after at least one previous standard line of treatment (NCT03552692). Venetoclax given alone at a dosage of 800 mg/day resulted in one complete response (CR) and two stable diseases (SDs) among 17 enrolled patients. The majority of patients (88.2%) interrupted the treatment due to disease progression. No relationship with BCL2 expression was documented. At a median follow-up of 8 months, two patients are currently still on treatment (one CR and one SD). No case of tumor lysis syndrome was registered. Therefore, venetoclax monotherapy shows activity in a minority of patients whose biological characteristics have not yet been identified.Clinical Trial Registrationwww.clinicaltrials.gov (NCT03552692, EudraCT number 2017-004630-29).