A retrospective study on the influence of siblings' relatedness in Bolivian patients with chronic Chagas disease
Espinosa-Pereiro, Juan (Hospital Universitari Vall d'Hebron)
Sánchez-Montalvá, Adrián (Hospital Universitari Vall d'Hebron. Institut de Recerca)
Salvador, Fernando (Hospital Universitari Vall d'Hebron. Institut de Recerca)
Sao-Avilés, Augusto (Hospital Universitari Vall d'Hebron)
Sulleiro Igual, Elena (Hospital Universitari Vall d'Hebron)
Molina Romero, Israel (Hospital Universitari Vall d'Hebron. Institut de Recerca)
Universitat Autònoma de Barcelona. Departament de Medicina

Data:	2019
Resum:	Background: Chagas disease is a protozoan infection caused by Trypanosoma cruzi. The disease has a chronic course in which 20-30% of the patients would develop progressive damage to the cardiovascular system and the gastrointestinal tube. We are still unable to predict who will develop end-organ damage but there are some acquired and genetic risk factors already known. Results: We reviewed data from 833 patients with serologically confirmed Chagas disease in this retrospective study. Patients were classified as siblings or non-siblings (controls) and the results of pre-treatment blood PCR assay, end-organ damage (cardiac and/or gastrointestinal), and the presence of delayed type hypersensitivity (DTH) skin involvement in patients treated with benznidazole were analyzed. Siblings were grouped by family and we randomly generated groups of 2 or 3 persons with the remaining controls. We classified the results of each variable as concordant or discordant and compared the concordance in these results among the sibling groups with that among control groups. We identified 71 groups of siblings and randomly generated 299 groups of non-related patients. Pre-treatment blood PCR concordance was significantly higher (19%) among siblings compared to controls (P = 0. 02), probably due to a higher frequency in pre-treatment positive results. No other statistically significant differences were found. Conclusions: A significant difference was found in the concordance of pre-treatment blood PCR for T. cruzi among siblings compared to non-related controls.
Drets:	Aquest document està subjecte a una llicència d'ús Creative Commons. Es permet la reproducció total o parcial, la distribució, la comunicació pública de l'obra i la creació d'obres derivades, fins i tot amb finalitats comercials, sempre i quan es reconegui l'autoria de l'obra original.
Llengua:	Anglès
Document:	Article ; recerca ; Versió publicada
Publicat a:	Parasites & vectors, Vol. 12 Núm. 1 (24 2019) , p. 260, ISSN 1756-3305

DOI: 10.1186/s13071-019-3518-4
PMID: 31126327

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