PMID- 27164940 OWN - NLM STAT- MEDLINE DCOM- 20170822 LR - 20170822 IS - 1423-0356 (Electronic) IS - 0025-7931 (Linking) VI - 91 IP - 5 DP - 2016 TI - Severe Prolonged Cough as Presenting Manifestation of FIP1L1-PDGFRA+ Chronic Eosinophilic Leukaemia: A Widely Ignored Association. PG - 374-9 LID - 10.1159/000446076 [doi] AB - Chronic eosinophilic leukaemia associated with the FIP1L1-PDGFRA fusion gene (F/P+ CEL) is a rare cause of marked persistent hypereosinophilia, arising almost exclusively in male patients. Clinical presentations are heterogeneous with a higher incidence of eosinophil-mediated cardiomyopathy than in other hypereosinophilic syndrome variants. Features of chronic myeloproliferative disease are often present, including splenomegaly and elevated serum vitamin B12 levels. The diagnosis is made by fluorescence in situ hybridization (FISH) showing the deletion of the CHIC2 locus and/or RT-PCR showing the FIP1L1-PDGFRA fusion transcript. Treatment with imatinib mesylate, a tyrosine kinase inhibitor, results in rapid and complete resolution of hypereosinophilia and associated symptoms, except for those related to sub-endocardial fibrosis that may be irreversible. We report the case of a male patient in whom isolated intractable cough remained the only clinical manifestation of F/P+ CEL for 4 years. Furthermore, eosinophil autofluorescence, an as yet unreported artefact in this setting, precluded the detection of the CHIC2 deletion and further delayed diagnosis, underlining that both FISH and RT-PCR should be performed when this disease is suspected. CI - (c) 2016 S. Karger AG, Basel. FAU - Roufosse, Florence AU - Roufosse F AD - Department of Internal Medicine, Hx00F4;pital Erasme, Universitx00E9; Libre de Bruxelles, Brussels, Belgium. FAU - Heimann, Pierre AU - Heimann P FAU - Lambert, Frederic AU - Lambert F FAU - Sidon, Pierre AU - Sidon P FAU - Bron, Dominique AU - Bron D FAU - Cottin, Vincent AU - Cottin V FAU - Cordier, Jean-Francois AU - Cordier JF LA - eng PT - Case Reports PT - Journal Article DEP - 20160512 PL - Switzerland TA - Respiration JT - Respiration; international review of thoracic diseases JID - 0137356 RN - 0 (Antineoplastic Agents) RN - 0 (CHIC2 protein, human) RN - 0 (DNA-Binding Proteins) RN - 0 (FIP1L1 protein, human) RN - 0 (Transcription Factors) RN - 0 (mRNA Cleavage and Polyadenylation Factors) RN - 8A1O1M485B (Imatinib Mesylate) RN - EC 2.7.10.1 (Receptor, Platelet-Derived Growth Factor alpha) RN - Pdgfra-Associated Chronic Eosinophilic Leukemia SB - IM MH - Aged MH - Antineoplastic Agents/therapeutic use MH - Chronic Disease MH - Cough/*diagnosis/etiology MH - DNA-Binding Proteins/genetics MH - Delayed Diagnosis MH - Diagnosis, Differential MH - Gene Fusion MH - Humans MH - Hypereosinophilic Syndrome/complications/*diagnosis/drug therapy/genetics MH - Imatinib Mesylate/therapeutic use MH - In Situ Hybridization, Fluorescence MH - Leukemia/complications/*diagnosis/drug therapy/genetics MH - Lung/diagnostic imaging MH - Male MH - Real-Time Polymerase Chain Reaction MH - Receptor, Platelet-Derived Growth Factor alpha/genetics MH - Tomography, X-Ray Computed MH - Transcription Factors/genetics MH - mRNA Cleavage and Polyadenylation Factors/genetics EDAT- 2016/05/12 06:00 MHDA- 2017/08/23 06:00 CRDT- 2016/05/12 06:00 PHST- 2016/02/11 00:00 [received] PHST- 2016/04/11 00:00 [accepted] PHST- 2016/05/12 06:00 [entrez] PHST- 2016/05/12 06:00 [pubmed] PHST- 2017/08/23 06:00 [medline] AID - 000446076 [pii] AID - 10.1159/000446076 [doi] PST - ppublish SO - Respiration. 2016;91(5):374-9. doi: 10.1159/000446076. Epub 2016 May 12.