PMID- 26829727 OWN - NLM STAT- MEDLINE DCOM- 20160421 LR - 20160202 IS - 1003-9406 (Print) IS - 1003-9406 (Linking) VI - 33 IP - 1 DP - 2016 Feb TI - [Calibration of false positive result in detection of BCR/ABL using fluorescence in situ hybridization]. PG - 22-5 LID - 10.3760/cma.j.issn.1003-9406.2016.01.006 [doi] AB - OBJECTIVE: To explore the effect of false positive signals during detection of BCR/ABL fusion gene by fluorescence in situ hybridization (FISH), and develop a method for calibration. METHODS: Normal specimens were mixed with BCR/ABL positive specimens in which presented signal pattern of 1-red-2-green-1-fusion (1R2G1F) using dual color dual fusion (DCDF) probes and 1-red-1-green-1-fusion (1R1G1F) using extra signal (ES) probes in different proportions. Mixed samples were detected using DCDF and ES probes. Results of DCDF probes, ES probe before calibration, ES probes after calibration and theoretical results were compared by binomial distribution in different proportions. RESULTS: The rate of false positive signals has risen with increase of negative rate. A significant difference was found between theoretical proportion and results without calibration in negative level, 5%, 10% and 25% positive level (P<0.05). There was no significant difference between theoretical proportion and results without calibration in 50% and 90% positive level (P>0.05). Also there was no significant difference between theoretical proportion and calibrated results (P>0.05). CONCLUSION: Calibration of FISH result can delimitate the effect of false positives, and can provide more reliable results in cases with low level positive rates. FAU - Du, Qinghua AU - Du Q AD - Department of Hematology, Guangzhou First People's Hospital, Guangzhou Medical University, Guangzhou, Guangdong 510180, China. qingshanli@hotmail.com. FAU - Li, Qingshan AU - Li Q FAU - Chen, Xiaoyan AU - Chen X FAU - Ying, Yi AU - Ying Y FAU - Wang, Shunqing AU - Wang S LA - chi PT - English Abstract PT - Journal Article PT - Research Support, Non-U.S. Gov't PL - China TA - Zhonghua Yi Xue Yi Chuan Xue Za Zhi JT - Zhonghua yi xue yi chuan xue za zhi = Zhonghua yixue yichuanxue zazhi = Chinese journal of medical genetics JID - 9425197 RN - EC 2.7.10.2 (Fusion Proteins, bcr-abl) SB - IM MH - Adult MH - Calibration MH - False Positive Reactions MH - Female MH - Fusion Proteins, bcr-abl/*genetics MH - Humans MH - In Situ Hybridization, Fluorescence/methods/*standards MH - Leukemia, Myelogenous, Chronic, BCR-ABL Positive/*diagnosis/*genetics MH - Young Adult EDAT- 2016/02/02 06:00 MHDA- 2016/04/22 06:00 CRDT- 2016/02/02 06:00 PHST- 2016/02/02 06:00 [entrez] PHST- 2016/02/02 06:00 [pubmed] PHST- 2016/04/22 06:00 [medline] AID - 940632006 [pii] AID - 10.3760/cma.j.issn.1003-9406.2016.01.006 [doi] PST - ppublish SO - Zhonghua Yi Xue Yi Chuan Xue Za Zhi. 2016 Feb;33(1):22-5. doi: 10.3760/cma.j.issn.1003-9406.2016.01.006.