Do Genetic Disorders Cause Infertility in Men?
Genetic disorders seen in men may lead to infertility by directly affecting sperm production and quality.
Such disorders are often not noticed; they are usually detected with genetic tests performed when pregnancy does not occur despite one year of unprotected intercourse.
📍 FertiJin Women’s Health and IVF Center in Istanbul Şişli examines the factors causing male infertility in detail with advanced genetic analyses.
What is Infertility Due to Genetic Disorders in Men?
Among the genetic causes of male infertility are conditions such as Y chromosome microdeletion, Klinefelter syndrome, primary ciliary dyskinesia, and sickle cell anemia.
- Y Chromosome Microdeletion:
Due to the deficiency of genetic sequences on the Y chromosome, sperm production does not occur or is very low. In this case, no sperm may be found in the semen (azoospermia). - Primary Ciliary Dyskinesia:
There is a structural defect in the sperm tail, which reduces sperm motility. - Sickle Cell Anemia:
It is a hereditary blood disease and may negatively affect sperm development and hormone production.
Genetic factors play an important role in male infertility. Therefore, it is recommended that comprehensive genetic tests be performed in men who cannot have children.
Causes of Genetic Disorders
Both hereditary and environmental factors play a role in the formation of genetic disorders.
The main causes are as follows:
- Hereditary transmission from the mother or father (autosomal or Y chromosome-related)
- Increased genetic similarity rate due to consanguineous marriage
- Advanced maternal or paternal age (decrease in egg and sperm quality)
- Chromosomal abnormalities (extra or missing chromosome structures)
These causes may lead to genetic errors in embryo development after fertilization and pregnancy failures.
Symptoms of Genetic Disorders
Genetic infertility usually does not show symptoms. However, the following situations may suggest this possibility:
- Failure to achieve pregnancy despite 1 year of regular unprotected intercourse
- Absence of sperm in semen (azoospermia)
- Decrease in sperm motility (asthenozoospermia)
- Recurrent miscarriages (due to genetic disorders in the embryo)
- Hormonal imbalances or decrease in testicular volume
If one or more of these symptoms are present, it is recommended to perform a genetic evaluation for male infertility.
How Is Genetic Disorder Diagnosed?
Diagnosis is made with genetic tests performed in a laboratory environment.
The following analyses are performed on blood or tissue samples taken from the male:
- Karyotype analysis: The number and structure of chromosomes are examined.
- Y chromosome microdeletion test: The deficiency of DNA regions responsible for sperm production is investigated.
- CFTR gene test: Genetic mutations that may cause obstruction in the sperm ducts are examined.
Advanced genetic tests applied in FertiJin laboratories both ensure clarification of the cause of infertility and help determine the correct strategy in IVF treatment.
IVF Treatment in Genetic Disorders
Treatment of infertility due to genetic disorders varies according to the underlying problem.
In cases where there is no sperm production at all, natural pregnancy is not possible; however, if sperm production is partially present, IVF treatment can be applied.
Applied Methods:
- Micro TESE (Microscopic Testicular Biopsy):
Sperm is searched under a microscope from testicular tissue. The obtained sperm are transferred to the egg with the microinjection (ICSI) method. - Preimplantation Genetic Diagnosis (PGT):
The obtained embryos are genetically screened before transfer.
Healthy embryos are selected to increase pregnancy success. - Genetic Counseling:
Couples are provided with detailed information about hereditary risks and treatment options.
FertiJin IVF Center increases the chance of having a healthy baby by applying genetic evaluation and IVF treatment in an integrated manner.
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Treatment Results in Genetic Disorders
In many men diagnosed with genetic disorders, success can be achieved with Micro TESE + IVF treatment.
However, the results vary depending on the type of disorder and the level of sperm production.
Frequently Asked Questions
Can a couple have a baby if there is a genetic disorder in the man?
Yes, in some genetic disorders sperm production is present, although low. IVF treatment can be applied with sperm obtained by the Micro TESE method.
When should a genetic test be performed?
If pregnancy does not occur despite 1 year of regular intercourse, especially if no sperm is found in the semen, a genetic test is recommended.
Can genetic disorders be treated?
Although the root cause cannot be eliminated, healthy embryos can be obtained with IVF and genetic diagnosis methods.