B Lymphoblastic Leukemia/Lymphoma with t(9;22)(q34.1;q11.2); BCR-ABL1

**Semantic type:** Neoplastic Process

**Definition:** A precursor lymphoid neoplasm which is composed of B lymphoblasts and carries a translocation between the BCR gene on chromosome 22 and the ABL1 gene on chromosome 9. It results in the production of the p190 kd or p210 kd fusion protein. It has an unfavorable clinical outcome.

**Synonyms:** - B Lymphoblastic Leukemia/Lymphoma with BCR-ABL1 Fusion - B Lymphoblastic Leukemia/Lymphoma with BCR::ABL1 Fusion - B Lymphoblastic Leukemia/Lymphoma with t(9;22)(q34.1;q11.2); BCR::ABL1 - B Lymphoblastic Leukemia/Lymphoma with t(9;22)(q34;q11.2); BCR-ABL1 - B lymphoblastic leukemia/lymphoma with t(9;22)(q34;q11.2); BCR-ABL1 - B-Lymphoblastic Leukemia/Lymphoma with BCR-ABL1 Fusion - B-Lymphoblastic Leukemia/Lymphoma with BCR::ABL1 Fusion - B-Lymphoblastic Leukemia/Lymphoma with t(9;22)(q34;q11.2); BCR-ABL1