PMID- 24895570 OWN - NLM STAT- MEDLINE DCOM- 20150114 LR - 20220330 IS - 2314-6141 (Electronic) IS - 2314-6133 (Print) VI - 2014 DP - 2014 TI - MYD88 L265P mutations are correlated with 6q deletion in Korean patients with Waldenstrom macroglobulinemia. PG - 363540 LID - 10.1155/2014/363540 [doi] LID - 363540 AB - Waldenstrom macroglobulinemia (WM) is a malignant lymphoplasma-proliferative disorder with IgM monoclonal gammopathy. A recent whole-genome study identified MYD88 L265P as the key mutation in WM. We investigated MYD88 mutations in conjunction with cytogenetic study in 22 consecutive Korean WM patients. Conventional G-banding and interphase fluorescence in situ hybridization (FISH) were performed at regions including 6q21 using bone marrow (BM) aspirates. Sixteen patients were subjected to Sanger sequencing-based MYD88 mutation study. Five patients (28%) showed cytogenetic aberrations in G-banding. The incidence of 6q21 deletion was 17% by conventional G-banding and 37% by FISH. Ten patients (45%) showed cytogenetic aberrations using FISH: 6q deletion in eight (37%) and IGH rearrangement in four (18%). Two patients had both the 6q deletion and IGH rearrangement, and two had only the IGH rearrangement. Eleven patients (69%) presented with the MYD88 L265P mutation. MYD88 mutations were significantly associated with the presence of 6q deletions (P = 0.037). Six patients with the 6q deletion for whom sequencing was possible were found to harbor MYD88 mutations. The MYD88 L265P mutation was also associated with increased lymphocyte burden in BM biopsy. This is the first report of high frequency MYD88 L265P mutations in Korean WM patients. FAU - Kim, Jung-Ah AU - Kim JA AD - Department of Laboratory Medicine, Seoul National University College of Medicine, 101 Daehangno, Jongno-gu, Seoul 110-744, Republic of Korea. FAU - Im, Kyongok AU - Im K AD - Cancer Research Institute, Seoul National University College of Medicine, Seoul, Republic of Korea. FAU - Park, Si Nae AU - Park SN AUID- ORCID: 0000-0002-6455-1528 AD - Cancer Research Institute, Seoul National University College of Medicine, Seoul, Republic of Korea. FAU - Kwon, Jiseok AU - Kwon J AD - Cancer Research Institute, Seoul National University College of Medicine, Seoul, Republic of Korea. FAU - Choi, Qute AU - Choi Q AD - Department of Laboratory Medicine, Seoul National University College of Medicine, 101 Daehangno, Jongno-gu, Seoul 110-744, Republic of Korea. FAU - Hwang, Sang Mee AU - Hwang SM AUID- ORCID: 0000-0003-3390-1932 AD - Department of Laboratory Medicine, Seoul National University College of Medicine, 101 Daehangno, Jongno-gu, Seoul 110-744, Republic of Korea ; Department of Laboratory Medicine, Seoul National University Bundang Hospital, Seongnam, Republic of Korea. FAU - Sekiguchi, Naohiro AU - Sekiguchi N AUID- ORCID: 0000-0001-9860-8257 AD - Hematology Division, National Hospital Organization Disaster Medical Center, Tokyo, Japan. FAU - Yoon, Sung-Soo AU - Yoon SS AD - Department of Internal Medicine, Seoul National University College of Medicine, Seoul, Republic of Korea. FAU - Lee, Dong Soon AU - Lee DS AD - Department of Laboratory Medicine, Seoul National University College of Medicine, 101 Daehangno, Jongno-gu, Seoul 110-744, Republic of Korea ; Cancer Research Institute, Seoul National University College of Medicine, Seoul, Republic of Korea. FAU - Kim, Seon Young AU - Kim SY AUID- ORCID: 0000-0001-5459-9635 AD - Department of Laboratory Medicine, Seoul National University College of Medicine, 101 Daehangno, Jongno-gu, Seoul 110-744, Republic of Korea. LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20140507 PL - United States TA - Biomed Res Int JT - BioMed research international JID - 101600173 RN - 0 (Genetic Markers) RN - 0 (MYD88 protein, human) RN - 0 (Myeloid Differentiation Factor 88) SB - IM MH - Adult MH - Aged MH - Aged, 80 and over MH - Female MH - Genetic Association Studies MH - Genetic Markers/genetics MH - Genetic Predisposition to Disease/*genetics MH - Humans MH - Male MH - Middle Aged MH - Mutation/genetics MH - Myeloid Differentiation Factor 88/*genetics MH - Polymorphism, Single Nucleotide/*genetics MH - Republic of Korea/epidemiology MH - Risk Assessment MH - Statistics as Topic MH - Waldenstrom Macroglobulinemia/*diagnosis/*genetics PMC - PMC4033400 EDAT- 2014/06/05 06:00 MHDA- 2015/01/15 06:00 PMCR- 2014/05/07 CRDT- 2014/06/05 06:00 PHST- 2014/02/21 00:00 [received] PHST- 2014/04/14 00:00 [revised] PHST- 2014/04/14 00:00 [accepted] PHST- 2014/06/05 06:00 [entrez] PHST- 2014/06/05 06:00 [pubmed] PHST- 2015/01/15 06:00 [medline] PHST- 2014/05/07 00:00 [pmc-release] AID - 10.1155/2014/363540 [doi] PST - ppublish SO - Biomed Res Int. 2014;2014:363540. doi: 10.1155/2014/363540. Epub 2014 May 7.