t(1;19)(q23;p13.3)

**Semantic type:** Cell or Molecular Dysfunction

**Definition:** A chromosomal abnormality consisting of the translocation of 19p13.3 with 1q23, resulting in the fusion of the TCF3 (E2A) gene with the PBX1 gene.

**Synonyms:** - TCF3-PBX1 t(1;19) - t(1;19)(q23;p13.3); PBX/E2A