trisomy 13

synonyms: Patau syndrome, trisomy D
https://doi.org/10.1351/goldbook.11323
Presence of part or all of an extra chromosome 13 from nondisjunction during meiosis.
Notes:
  1. This leads to multiple congenital abnormalities and mental retardation, and is usually fatal in early childhood.
  2. Patau syndrome can also occur with an extra partial chromosome 13 resulting from a Robertsonian translocation.
Source:
PAC, 2016, 88, 713. 'Glossary of terms used in developmental and reproductive toxicology (IUPAC Recommendations 2016)' on page 815 (https://doi.org/10.1515/pac-2015-1202)