PMID- 9949179 OWN - NLM STAT- MEDLINE DCOM- 19990311 LR - 20231213 IS - 0006-4971 (Print) IS - 0006-4971 (Linking) VI - 93 IP - 4 DP - 1999 Feb 15 TI - Fusion of ETV6 to neurotrophin-3 receptor TRKC in acute myeloid leukemia with t(12;15)(p13;q25). PG - 1355-63 AB - Chromosome translocations involving band 12p13 are known to be involved in a variety of hematologic malignancies, some of them resulting in rearrangement of the ETV6/TEL gene. Applying the fluorescence in situ hybridization (FISH) method, we found a cryptic translocation t(12;15)(p13;q25) in an adult acute myeloid leukemia (AML) patient. Hybridization with cosmid probes showed that the ETV6 gene was rearranged in this translocation. A patient-specific cDNA library was screened with ETV6 cDNA, and a novel fusion transcript was identified between the ETV6 and TRKC/NTRK3 gene located on 15q25. TRKC is a receptor tyrosine kinase that is activated by neurotrophin-3 (NT-3). It is known to be expressed broadly in neural tissues but not in hematologic cells, so far. ETV6-TRKC chimeric transcript encoded the pointed (PNT) domain of the ETV6 gene that fused to the protein-tyrosine kinase (PTK) domain of the TRKC gene. Two types of fusion transcript were determined, one that included the entire PTK domain of TRKC and the other in which the 3'-terminal 462 bp of TRKC was truncated within the PTK domain. Western blot analysis showed the expression of both chimeric proteins of 52 and 38 kD in size. Our results suggest that chimeric PTK expressed in the leukemic cells may contribute to cellular transformation by abnormally activating TRK signaling pathways. Moreover, this is the first report on truncated neurotrophin receptors associated in leukemia. FAU - Eguchi, M AU - Eguchi M AD - Department of Cancer Cytogenetics, Research Institute for Radiation Biology and Medicine, Hiroshima University, Hiroshima, Japan. FAU - Eguchi-Ishimae, M AU - Eguchi-Ishimae M FAU - Tojo, A AU - Tojo A FAU - Morishita, K AU - Morishita K FAU - Suzuki, K AU - Suzuki K FAU - Sato, Y AU - Sato Y FAU - Kudoh, S AU - Kudoh S FAU - Tanaka, K AU - Tanaka K FAU - Setoyama, M AU - Setoyama M FAU - Nagamura, F AU - Nagamura F FAU - Asano, S AU - Asano S FAU - Kamada, N AU - Kamada N LA - eng PT - Case Reports PT - Journal Article PT - Research Support, Non-U.S. Gov't PL - United States TA - Blood JT - Blood JID - 7603509 RN - 0 (DNA-Binding Proteins) RN - 0 (Proto-Oncogene Proteins c-ets) RN - 0 (Receptors, Nerve Growth Factor) RN - 0 (Repressor Proteins) RN - 0 (Transcription Factors) RN - EC 2.7.10.1 (Receptor Protein-Tyrosine Kinases) RN - EC 2.7.10.1 (Receptor, trkC) SB - IM MH - Acute Disease MH - Adult MH - Amino Acid Sequence MH - Base Sequence MH - Chromosome Mapping MH - *Chromosomes, Human, Pair 12 MH - *Chromosomes, Human, Pair 15 MH - DNA-Binding Proteins/*genetics MH - Gene Rearrangement MH - Humans MH - Leukemia, Myeloid/*genetics MH - Male MH - Middle Aged MH - Molecular Sequence Data MH - Proto-Oncogene Proteins c-ets MH - Receptor Protein-Tyrosine Kinases/*genetics MH - Receptor, trkC MH - Receptors, Nerve Growth Factor/*genetics MH - *Repressor Proteins MH - Transcription Factors/*genetics MH - *Translocation, Genetic MH - ETS Translocation Variant 6 Protein EDAT- 1999/02/09 00:00 MHDA- 1999/02/09 00:01 CRDT- 1999/02/09 00:00 PHST- 1999/02/09 00:00 [pubmed] PHST- 1999/02/09 00:01 [medline] PHST- 1999/02/09 00:00 [entrez] AID - S0006-4971(20)48774-9 [pii] PST - ppublish SO - Blood. 1999 Feb 15;93(4):1355-63.