Androgen Insensitivity Syndrome (previously known as Testicular Feminisation Syndrome), is now classified as a type of XY DSD (disorders of sexual development). This is an abnormality of sexual development in which affected individuals have an XY chromosomal constitution, undescended testes and female secondary sexual characteristics (including female external genitalia).
Test specific information
The genetic factor is continuously present, and will always be visible.
Normally the result can be expected within 25 working days. This turn-around-time starts when both the sample and the fully filled-out and signed submission form have been received.
Location of disease or trait
Trait or disease of the endocrine (hormone) system.
This DNA test is available for the following breeds: American Quarter.
For this DNA test we accept the following materials: Blood EDTA, Blood Heparin, Semen, Tissue, Hair. Please contact PharmaDNA if you wish to submit other material as listed.
The following results are possible for a female: the mode of
is based on recessive or dominant patterns.The following results are possible for a male:
- A male animal has the sex chromosome Y and a healthy allel. When used in breeding, this animal will not become affected by the disease, nor will the disease be inherited to the next generation.
- A male animal has the sex chromosome Y and a disease allel. When used in breeding, this animal will become affected by the disease. Also, male offspring will receive the Y-chromosome, whereas female offspring will receive the disease allele.
The disease is inherited in an X-chromosomal manner. This means, that female individuals can be free (homozygous normal), affected (homozygous affected) or carrier (heterozygous). Male individuals carry only one copy of the X-chromosome, which results in the effect that male carriers will also be affected. Female carriers may spread the disease in a population without showing symptoms themselves. Because of this, it is extremely important to identify carriers correctly to prevent spreading of a disease.
Severity of Disease