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Effect and in silico characterization of genetic variants associated with severe spermatogenic disorders in a large Iberian cohort
Author(s) -
CervánMartín Miriam,
BossiniCastillo Lara,
RiveraEgea Rocío,
Garrido Nicolás,
Luján Saturnino,
Romeu Gema,
SantosRibeiro Samuel,
Castilla José A.,
Gonzalvo María del Carmen,
Clavero Ana,
Vicente Francisco Javier,
GuzmánJiménez Andrea,
Burgos Miguel,
Barrionuevo Francisco Javier,
Jiménez Rafael,
SánchezCurbelo Josvany,
LópezRodrigo Olga,
Peraza María Fernanda,
PereiraCaetano Iris,
Marques Patrícia Isabel,
Carvalho Filipa,
Barros Alberto,
Bassas Lluís,
Seixas Susana,
Gonçalves João,
Larriba Sara,
Lopes Alexandra Manuel,
Carmona Francisco David,
PalominoMorales Rogelio Jesús
Publication year - 2021
Publication title -
andrology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.947
H-Index - 43
eISSN - 2047-2927
pISSN - 2047-2919
DOI - 10.1111/andr.13009
Subject(s) - azoospermia , biology , single nucleotide polymorphism , male infertility , genome wide association study , infertility , genetics , semen quality , oligospermia , population , snp , sperm , medicine , genotype , pregnancy , gene , environmental health
Background Severe spermatogenic failure (SpF) represents the most extreme manifestation of male infertility, as it decreases drastically the semen quality leading to either severe oligospermia (SO, <5 million spermatozoa/mL semen) or non‐obstructive azoospermia (NOA, complete lack of spermatozoa in the ejaculate without obstructive causes). Objectives The main objective of the present study is to analyze in the Iberian population the effect of 6 single‐nucleotide polymorphisms (SNPs) previously associated with NOA in Han Chinese through genome‐wide association studies (GWAS) and to establish their possible functional relevance in the development of specific SpF patterns. Materials and methods We genotyped 674 Iberian infertile men (including 480 NOA and 194 SO patients) and 1058 matched unaffected controls for the GWAS‐associated variants PRMT6 ‐rs12097821, PEX10 ‐rs2477686, CDC42BPA ‐rs3000811, IL17A ‐rs13206743, ABLIM1 ‐rs7099208, and SOX5 ‐rs10842262. Their association with SpF, SO, NOA, and different NOA phenotypes was evaluated by logistic regression models, and their functional relevance was defined by comprehensive interrogation of public resources. Results ABLIM1 ‐rs7099208 was associated with SpF under both additive (OR = 0.86, p = 0.036) and dominant models (OR = 0.78, p = 0.026). The CDC42BPA ‐rs3000811 minor allele frequency was significantly increased in the subgroup of NOA patients showing maturation arrest (MA) of germ cells compared to the remaining NOA cases under the recessive model (OR = 4.45, p = 0.044). The PEX10 ‐rs2477686 SNP was associated with a negative testicular sperm extraction (TESE) outcome under the additive model (OR = 1.32, p = 0.034). The analysis of functional annotations suggested that these variants affect the testis‐specific expression of nearby genes and that lincRNA may play a role in SpF. Conclusions Our data support the association of three previously reported NOA risk variants in Asians ( ABLIM1 ‐rs7099208, CDC42BPA ‐rs3000811, and PEX10 ‐rs2477686) with different manifestations of SpF in Iberians of European descent, likely by influencing gene expression and lincRNA deregulation.