Clinical profile and outcome of children with anaplastic large cell lymphoma treated with short-course chemotherapy - ten years experience from a tertiary care center in a LMIC.

Abstract

Anaplastic large-cell lymphoma (ALCL) constitutes 10-15% of non-Hodgkin lymphoma in children. With short-course chemotherapy, outcome has improved up-to 90% in developed-countries. There is limited-data on outcome of pediatric ALCL treated with ALCL99 protocol from low-middle income countries. Children ≤14 years, diagnosed with ALCL between 1^st January 2007 and 31^st December 2016 were analyzed. Details regarding clinical-presentation and treatment were recorded and outcome was analyzed. Fourteen-children were diagnosed. Median-age was 114 months (range 24 - 162 months). Male:female ratio was 3.6:1. Stage-I, II and III disease was seen in three (21.4%), three (21.4%), and eight (57.1%) children, respectively. Low, standard and high-risk disease was seen in two (14.2%), six (42.9%) and six (42.9%), respectively. All children were treated using ALCL99 protocol. Three (21.4%) children had disease-progression/relapse and five (35.7%) died (three from treatment-related mortality, and two from disease). At median follow-up of 54-months, four-year EFS and OS were 64.3% and 64.3%, respectively. Log-rank test demonstrated female gender (p = 0.005), stage-III disease (p < 0.001), visceral-organ involvement (p = 0.035), high-risk disease (p = 0.016) and, serum albumin ≤3.5 g/dL (p = 0.031) associated with significantly worse 4-year EFS. Cox-regression analysis demonstrated female gender associated with poor EFS (p = 0.02) and female gender and visceral-organ involvement associated with poor OS (p = 0.02, p = 0.011, respectively). Good survival could be achieved for children with ALCL using uniform treatment protocol in a resource-limited setting, especially among low and standard-risk children. Female-sex, high-risk disease, stage-III disease, visceral organ involvement and low albumin levels were associated with poor outcome, however these findings need to be corroborated in larger studies.