High Rate of Twins among Offspring of Mothers with the Järvi-Hakola-Nasu Disease and with Comments on Disorders Associated with Twinning

Autor: A. W. Eriksson, H. P. A. Hakola
Rok vydání: 1997
Předmět:
Zdroj: Acta geneticae medicae et gemellologiae: twin research. 46:37-46
ISSN: 2059-6324
0001-5660
DOI: 10.1017/s0001566000000738
Popis: Finnish mothers with Järvi-Hakola-Nasu disease, progressive dementia with lipomembranous polycystic osteodysplasia (McKusick 221770) have a high rate of twin maternities, 128.2/1000. The exact 99% confidence intervals are 28.7 – 322.2/1000, thus above the average twinning rate in Finland, i.e. 15/1000. This eightfold increase in twinning may be an indication of a disturbed cortico-hypothalmic-hypophyseal axis or an other premorbid hormonal imbalance. It is concluded that even if dizygotic twinning is as a rule an event in itself, not only iatrogenic factors, as ovulation inducers, etc., but also some genetic disorders may be associated with twinning. More studies are needed to elucidate the incidence of twinning in families with these disorders.
Databáze: OpenAIRE