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Research Article Open access CC BY 4.0

Early T-cell Precursor Acute Lymphoblastic Leukemia- A Neoplasm with Dual Lineage Phenotype- Case Study of Two Patients

. Surabhi, A. Singh, J. Singh Nigam

International Journal of Research and Reports in Hematology · pp. 93–99 · Published 7 Jun 2021

Abstract

Early T-cell Precursor Acute Lymphoblastic Leukemia (ETP-ALL) is a subtype of T-ALL/LBL which is derived from thymic cells at the early T-cell precursor (ETP) differentiation stage that have the potential to differentiate into multiple lineages, including lymphoid and myeloid. ETP-ALL accounts for 15% of childhood T-ALL and 10-30% of adult T-ALL. It has characteristic  immunophenotypic expression  of CD7, a lack of CD1a and CD8, weak expression of CD5 (with <75% positive blasts), and positive expression of one or more stem cell or myeloid markers including CD117, HLADR, CD13, CD33, CD11b or CD65. We here in report two cases of ETP-ALL with brief review of literature.

ETP-ALL T-ALL CD1a CD8

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