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Y Chromosome AZF Microdeletion Testing

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Y Chromosome AZF Microdeletion – The Key to Male Infertility

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AZF (Azoospermia Factor)

Located on the long arm of the Y chromosome (Yq11), it controls sperm production. The AZFa/AZFb/AZFc regions are responsible for different stages of sperm formation.

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AZF Gene Family

Partial or complete deletion of the AZF gene family can lead to spermatogenic failure, clinically manifested as severe azoospermia or oligospermia.

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Incidence in Patients

Y chromosome AZF microdeletion accounts for 10%-15% of the causes of azoospermia and oligospermia.

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General Population Incidence

The incidence of Y chromosome AZF microdeletion is about 1/4000 in the general population, but in male infertility patients, it ranges from 2%-10% or even higher.

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ICSI Assisted Reproduction

Using ICSI (Intracytoplasmic Sperm Injection) in assisted reproduction can vertically transmit AZF gene deletions to male offspring, causing the same male infertility issues.

Significance of Testing

Diagnose Causes: Identifies the cause of azoospermia or oligospermia, avoiding unnecessary medication and surgical treatments.

Genetic Counseling: Provides genetic counseling to prevent vertical transmission of the disease to the next generation.