Expected outcomes for patients with Peripheral T-Cell Lymphoma (PTCL) is largely based on 2 large retrospective series: the International T-Cell Project (ITCP) and the British Columbia Cancer Agency (BCCA) series, which reported outcomes on 1314 cases and 199 cases, respectively.rr In the ITCP, >85% of patients received CHOP-based therapy. The 5-year FFS for PTCL-NOS, angioimmunoblastic T-Cell lymphoma (AITL), and ALK-negative anaplastic large cell lymphoma (ALCL) were only 20%, 18%, and 36%, respectively. Similar outcomes were observed in the BCCA series with 5-year progression-free survival (PFS) of 29%, 13%, and 28% for PTCL-NOS, AITL, and ALCL, respectively.r
There is no currently agreed on standard frontline treatment or approach for PTCL. In a phase 2 study evaluating CHOP induction therapy followed by ASCT for untreated PTCL, the overall response rate (ORR) to CHOP was 79% with a complete response (CR) rate of 39%.r
A small phase 3 study from the GOELAMS (Groupe Ouest Est d'Etude des Leucémies aiguës et Autres Maladies du Sang) group of CHOP vs etoposide, ifosfamide, cisplatin alternating with adriamycin, bleomycin, vinblastine, and dacarbazine showed no difference in outcome for the 2 arms and resulted in an ORR of 70% and a CR rate of 35% with CHOP.r
A search of the literature found limited evidence to support the use of CHOEP14 for the treatment of peripheral T-cell lymphoma. The expert reference panel supported publication of the protocol on the basis of the information summarised below. The committee was most strongly influenced by the retrospective analysis of patients treated in studies of the German High Grade Non-Hodgkin Lymphoma Study Group reported by Schmitz et alr and also by the large prospective phase II study reported by d'Amore et al.r
Source |
Study & Year Published |
Supports Use |
Is the dose and regimen consistent with the protocol? |
Comments |
Retrospective series |
Schmitz et al. 2010 |
Yes |
Yes |
- |
Phase II trials |
d'Amore et al. 2012 |
Yes |
Yes |
- |
Case series |
N/A |
N/A |
N/A |
- |
Observational studies |
N/A |
N/A |
N/A |
- |
Guidelines |
Date published/revised |
Supports Use |
Is the dose and regimen consistent with the protocol? |
Comments |
NCCN |
Version 1.2016 |
Yes |
N/A |
- |
BCCA |
N/A |
N/A |
Yes |
- |
CCO |
N/A |
N/A |
Yes |
- |
Efficacy
The addition of etoposide to CHOP (CHOEP) has been studied in an attempt to improve on the CR and FFS rates achieved with CHOP. The German high-grade non-Hodgkin lymphoma study group analyzed the subset of patients with PTCL treated on 7 different prospective phase 2 or phase 3 protocols.r Of 320 patients with PTCL enrolled in these studies, most had 1 of 4 of the major subtypes of PTCL: 78 patients with ALK-positive ALCL, 113 patients with ALK-negative ALCL, 70 patients with PTCL-NOS, and 28 patients with AITL. The authors found that younger patients (<60 years old) with normal lactate dehydrogenase (LDH) had a significant improvement in outcome if they received CHOP plus etoposide compared with CHOP alone, with 3-year event-free survival (EFS) of 75.4% vs 51%, although no difference in overall survival (OS) was observed. The benefits were greatest in the more favourable ALK-positive ALCL subtype, but there was a trend toward improved EFS in favour of CHOP plus etoposide in the other subsets as well (P = 0.057).
The Nordic group have conducted a phase 2 prospective study of CHOEP induction followed by upfront stem cell transplantation for PTCL.r In this phase 2 study, patients received bi-weekly CHOEP-14 followed by ASCT for the responders. The ORR to CHOEP was 82% with a CR rate of 51%. The highest OS and PFS occurred in patients with ALCL (5 years OS 70%; PFS 61%). AILT and PTCL-NOS had an OS at 5 years of 52% and 47% and PFS of 49% and 38% respectively.r Elderly patients received an induction treatment consisting of biweekly CHOP i.e. without etoposide. The 5 year OS and PFS for this subcohort were 45% and 34% respectively. The corresponding values for CHOEP treated patients aged 55 to 60 years were similar however at 40% and 39%.r Adding etoposide to CHOP represents a reasonable approach, particularly in select groups as long as it can be given without significant excess toxicity.
Toxicity
In elderly patients, the addition of etoposide added significant toxicity. In the Nordic study of biweekly CHOEP pretransplantation grades 3 to 4 haematologic toxicity were seen in 86% of patients and grades 3 to 4 non haematologic toxicities were recorded in 72 patients (45%). Infectious complications were the most adverse event (n=59, 37%), followed by mucositis (n=7, 4% and GI toxicity (n=6, 4%).r