An unusual presentation of a pediatric patient with mixed phenotypic acute leukemia with PICALM::MLLT10 gene rearrangement.
Erlyn SmithChandra KrishnanPublished in: Pediatric hematology and oncology (2023)
Mixed phenotype leukemia (MPAL) is a rare type of acute leukemia with blasts that co-express antigens of more than one lineage on the same cell or that have separate populations of blasts of different lineages. Here, we report a five-year-old male with inguinal lymphadenopathy diagnosed with MPAL-T/Myeloid MPAL-T/M. The clone demonstrated lineage and immunophenotypically distinct blast populations in the bone marrow and lymph nodes. Bone marrow cytogenetic studies confirmed a rare PICALM::MLLT10 gene fusion. Patients with this fusion gene have been found to have high risk features and poor survival rates in several small case series. Our case report highlights an unusual presentation in medullary and extramedullary sites, within a pediatric patient. At the time of submission of this case report, the patient has shown good response to chemotherapy and continues to be in remission.
Keyphrases
- bone marrow
- case report
- single cell
- genome wide
- copy number
- lymph node
- mesenchymal stem cells
- genome wide identification
- prostate cancer
- locally advanced
- radiation therapy
- transcription factor
- dna methylation
- genome wide analysis
- early stage
- squamous cell carcinoma
- stem cells
- free survival
- immune response
- ulcerative colitis
- gene expression
- disease activity
- fine needle aspiration