Ring chromosome 15 syndrome

Ring chromosome 15 is a rare chromosomal anomaly syndrome, with a highly variable phenotype, characterized by pre- and/or postnatal growth retardation, variable intellectual disability, short stature, dysmorphic features (microcephaly, triangular facies, frontal bossing, hypertelorism, ear anomaly, broad nasal bridge, highly arched palate, micrognathism), hand and feet anomalies (e.g. brachydactyly, clinodactyly, syndactyly), and multiple hyperpigmented and/or hypopigmented spots. Severe phenotypes present with cardiac abnormalities and/or renal malformations. Other reported features include hypotonia, speech delay, talipes equinovarus, and genital anomalies (cryptorchidism and hypospadias).

Growth delay

A deficiency or slowing down of growth pre- and postnatally.

Total: 2

(per page)

PMID (PMCID)
29226546	MIXED_SAMPLE
	Small supernumerary marker chromosome 15 and a ring chromosome 15 associated with a 15q26.3 deletion excluding the IGF1R gene.
	Szabo A, Czako M, Hadzsiev K, Duga B, Banfai Z, Komlosi K, Melegh B. Am J Med Genet A. 2018;176(2):443-449.
	We hypothesize that haploinsufficiency of the 15q26 genomic region distal to IGF1R gene might be related to growth disturbance; however, presence of the ring chromosome 15 itself could also be responsible for the growth delay.
4040173	MIXED_SAMPLE
	Phenotypic delineation of ring chromosome 15 and Russell-Silver syndromes.
	Wilson GN, Sauder SE, Bush M, Beitins IZ. J Med Genet. 1985;22(3):233-6.
	A male child with features of the Russell-Silver syndrome, including pre- and postnatal growth delay, triangular facies, bilateral fifth finger clinodactyly, and disproportionate lower extremities, was found to have a ring chromosome 15 in all peripheral leucocytes examined.