Final Report Of a Phase II Clinical Trial Of Lenalidomide Monotherapy For T-Cell Lymphoma
Bibliographic record
Abstract
Abstract Background Patients with T-cell lymphomas face a poorer prognosis when compared to patients with B-cell lymphomas. New therapeutic approaches need to be developed in order to improve outcomes for these patients. We report the final results of a phase 2 multicenter clinical trial evaluating lenalidomide monotherapy in T-cell lymphomas. Methods Forty patients with relapsed and refractory T-cell lymphomas other than mycosis fungoides, as well as patients with untreated T-cell lymphoma who were not candidates for combination chemotherapy, were prescribed oral lenalidomide (25mg daily) on days 1 to 21 of each 28 day cycle, with standardized dose reductions for toxicity. Treatment continued until disease progression, death or unacceptable toxicity. The primary endpoint was overall response rate, and secondary endpoints were complete and partial response rates, progression-free and overall survival (PFS, OS), and safety. We also determined duration of response (DoR). Results Forty patients were enrolled in the study; one was subsequently deemed ineligible. In the 39 eligible patients, the median age was 65. ECOG PS was 0-1 (n=29), 2 (n=8), and 3 (n=2). The histology of the studied cases included peripheral T-cell unspecified (PTCL-u, n=14), angioimmunoblastic (n=9), anaplastic large cell (n=10), enteropathic T-cell (n=2), Hepatosplenic gamma/delta (n=2), and lymphoblastic T-cell lymphoma (n=2). The number of prior therapies was 0 (n=8), 1 (n=14), 2 (n=8), 3 (n=6), 4 (n=2), and 5 (n=1). Five patients had previous autologous stem cell transplant. Eleven patients were refractory to their previous treatment. The median time from diagnosis until the start of treatment was 14 months (range, 1-204 months). The median time from completion of prior therapy to the start of lenalidomide was 5 months (range, 1-48 months). The ORR was 10/39 (26%); 3 (8%) were complete responses and 7 were partial responses. Responses occurred in anaplastic, angioimmunoblastic, and PTCL-u histologies. Three additional patients had SD ≥5 cycles. The median OS was 12 months (range<1-69+ months), median PFS was 4 months (range,<1-50+ months) and the median DoR was 13 months (range 2-37+ months), including 5 responses lasting greater than 1 year. The most common grade 4 adverse event was thrombocytopenia (21%) while pain NOS (21%) and neutropenia (13%) were the most commonly reported grade 3 adverse events. Among the patients who had relapsed/refractory peripheral T-cell lymphoma (n=29) the ORR was 24%, median OS was 12 months, median PFS was 4 months, and median DoR was 5 months (range, 2-37+ months). The ORR of the subpopulation of previously untreated patients who were not eligible for combined chemotherapy (n=8) was 43%, median OS was 22 months (range,<1-38+ months), median PFS was 2 months (range,<1-38+ months), and median DoR was 21 months (range 5-28+ months). Discussion In T-cell lymphomas, oral lenalidomide monotherapy demonstrated clinically relevant efficacy. The toxicity profile in T-cell lymphoma is manageable and consistent with prior studies involving lenalidomide. Lenalidomide also showed promise for patients who are not eligible for combination chemotherapy. The results with lenalidomide in relapsed/refractory patients are comparable to those seen with other available monotherapies for this disease. Several durable (>1 year) responses were seen, but the proportion of durable responses was low. Future development of lenalidomide therapy for T-cell lymphomas should include efforts to identify the subset of patients most likely to benefit, and the development of rational drug combinations. Disclosures: Off Label Use: Lenalidomide was prescribed to treat T-cell lymphoma. Stewart:Celgene: Honoraria. van der Jagt:Millenium: Consultancy; Roche: Consultancy; Celgene: Consultancy. Reiman:Celgene: Consultancy; Celgene: Research Funding.
Fetched live from OpenAlex and de-inverted. Abstracts are not stored in this database: the inverted indexes are 8.6 GB of the frame’s 9.3 GB of text, and the host has 13 GB free.
How this classification was reachedexpand
Full frame distilled prediction
Teacher imitationNot calibrated prevalence, not ground truth. Human validation pending. Learned from the 10,348 direct Codex labels and 10,348 direct Gemma labels. Candidate is the union of thresholded teacher heads; consensus is their intersection. These outputs are machine_predicted_unvalidated and are not human labels or direct frontier model labels.
Codex and Gemma teacher scores by category
| Category | Codex | Gemma |
|---|---|---|
| Metaresearch | 0.001 | 0.001 |
| Meta-epidemiology (narrow) | 0.000 | 0.000 |
| Meta-epidemiology (broad) | 0.001 | 0.000 |
| Bibliometrics | 0.000 | 0.000 |
| Science and technology studies | 0.000 | 0.000 |
| Scholarly communication | 0.000 | 0.000 |
| Open science | 0.000 | 0.000 |
| Research integrity | 0.000 | 0.000 |
| Insufficient payload (model declined to judge) | 0.000 | 0.000 |
Machine scores (provisional)
The two teacher heads of the student model, read on this work. A score orders the frame for review; it never asserts a category, and the validation status ships verbatim with every row.
Baseline scores from an immature model (maturity gate not passed, 7 training rounds). Scores rank; they never assert a category.
score_only:v0-immature-baseline · verbatim from the scoring run: score_only means the number may rank works, and no category label ships from itClassification
machine, unvalidatedMachine predicted; a candidate call from one teacher head, not a consensus.
How this classification was reached, model by model and score by score, is at the end of the page under "How this classification was reached".