Partial monosomy 13q

Partial monosomy 13q
Partial monosomy 13q
	Chromosome 13 which is involved in this condition

Last updated November 23, 2025

Partial monosomy of chromosome 13q is a monosomy that results from the loss of all or part of the long arm of chromosome 13 in human beings. It is a rare genetic disorder which results in severe congenital abnormalities which are frequently fatal at an early age. Up until 2003, more than 125 cases had been documented in medical literature.^[1]

Symptoms and signs

Symptoms vary from case to case, and may correlate to how much of the chromosome is missing. Symptoms that are frequently observed with the condition include:^{[ citation needed ]}

Low birth weight
Malformations of the head
Eye abnormalities
Defects of the hands and feet, polydactyly
Reproductive abnormalities (males)
Psychological and motor retardation

References

↑ Kardon NB. Chromosomal Disorders. In: Winters R, Lazar T, Kirchner K, Stoye K, McLaughlin MA, Rothschild R, eds. NORD Guide to Rare Disorders. 3rd ed. Philadelphia, PA: Lippincott Williams & Wilkins; 2003:62-63.

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[1] Kardon NB. Chromosomal Disorders. In: Winters R, Lazar T, Kirchner K, Stoye K, McLaughlin MA, Rothschild R, eds. NORD Guide to Rare Disorders. 3rd ed. Philadelphia, PA: Lippincott Williams & Wilkins; 2003:62-63.

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