What are the symptoms of trisomy mosaic?

The signs and symptoms of mosaic trisomy 9 vary but may include:

  • Different degrees of developmental delay and intellectual disability.
  • Abnormal growth including low birth weight, failure to thrive, hypotonia (low muscle tone), and short stature.

What are the symptoms of trisomy 15?


  • Developmental delay.
  • Intellectual disability.
  • Hypotonia (low muscle tone)
  • Seizures.
  • High and/or cleft palate.
  • Scoliosis.
  • Distinctive facial features.
  • Genital abnormalities.

What does trisomy 15 indicate?

Chromosome 15, Distal Trisomy 15q is an extremely rare chromosomal disorder in which the end (distal) portion of the long arm (q) of the 15th chromosome appears three times (trisomy) rather than twice in cells of the body. Chromosomes are found in the nucleus of all body cells except red blood cells.

Is chromosome 15 inherited?

People normally inherit one copy of chromosome 15 from each parent. Some genes on this chromosome are turned on (active) only on the copy inherited from a person’s father (the paternal copy). This parent-specific gene activation results from a phenomenon called genomic imprinting.

What do you need to know about Mosaic trisomy 15?

Disease definition. Mosaic trisomy 15 is a rare chromosomal anomaly syndrome principally characterized by intrauterine growth restriction, congenital cardiac anomalies (incl. ventricular and atrial septal defects, patent ductus arteriosus) and craniofacial dysmorphism (incl. hypertelorism, downslanting palpebral fissures, wide nasal bridge).

What are the symptoms of Distal trisomy 15q?

The duplication of the distal portion of chromosome 15q is responsible for the symptoms and physical features that characterize this disorder. The range and severity of associated abnormalities may depend upon the exact length and location of the duplicated portion of chromosome 15q.

Is the long arm of chromosome 15 trisomic?

In individuals with Chromosome 15, Distal Trisomy 15q, an extremely rare chromosomal disorder, the end (distal) portion of the long arm (q) of chromosome 15 (15q) is duplicated (trisomic).

When is trisomy 15 detected in a CVS sample?

Complete trisomy 15 is a lethal abnormality and thus trisomy 15 detected in a normally developed embryo at a 10-12 week CVS sample is usually confined to placental tissues.