[DAZL gene polymorphisms and astheno-teratozoospermia]

Area of Science:

• Genetics
• Reproductive Medicine
• Male Infertility

Background:

• Astheno-teratozoospermia is a significant cause of male infertility.
• Genetic factors, including single nucleotide polymorphisms (SNPs), are increasingly implicated in male reproductive health.
• The DAZL gene plays a crucial role in spermatogenesis.

Purpose of the Study:

• To investigate the association between specific polymorphisms (A260G and A386G) in the DAZL gene and astheno-teratozoospermia in infertile Han Chinese males.
• To determine if these DAZL gene variants could serve as potential molecular markers for male infertility.

Main Methods:

• Case-control study involving 173 infertile males with astheno-teratozoospermia and 175 healthy male controls.
• Semen analysis including routine and morphological assessments.
• Genotyping of DAZL gene polymorphisms (A260G and A386G) using Sequenom MassARRAY system and comparative frequency analysis.

Main Results:

• The AA nucleotide variant for both A260G and A386G polymorphisms of the DAZL gene was present in both infertile and control groups.
• No heterozygous AG variant was detected in either the case or control groups.
• The frequencies of the observed genotypes did not differ significantly between the groups.

Conclusions:

• The A260G and A386G polymorphisms of the DAZL gene are not correlated with astheno-teratozoospermia-induced male infertility in the studied Han Chinese population.
• These specific DAZL gene polymorphisms cannot be considered reliable molecular markers for diagnosing or predicting male infertility in this demographic.