PMID- 8378168 OWN - NLM STAT- MEDLINE DCOM- 19931019 LR - 20211203 IS - 0269-5022 (Print) IS - 0269-5022 (Linking) VI - 7 IP - 3 DP - 1993 Jul TI - Concordance of parental race/ethnicity in relation to the risk of sudden infant death syndrome (SIDS). PG - 253-62 AB - It has been reported that parental human leukocyte antigen (HLA) compatibility is associated with certain adverse reproductive outcomes such as multiple spontaneous fetal losses and malformations, particularly among women without a prior livebirth. In order to study the relation between parental HLA compatibility and the risk of SIDS, a population-based case-control study was conducted using 1982-1990 Washington State linked birth and death certificate data. Concordance of parental race/ethnicity combined with prior maternal fetal loss was used as surrogate measures of parental HLA compatibility. The relation was evaluated separately among infants with and without a prior live-born sibling. Among first liveborn infants, those of racially discordant parents were at reduced risk of SIDS compared with those of racially concordant parents (relative risk [RR] = 0.57, 95% confidence interval = 0.34-0.96). Infants of white-minority parents were all at lower risk of SIDS than infants of white-white parents. Infants of racially concordant parents with two or more prior fetal losses were at increased risk of SIDS (RR = 2.44, 1.07-5.56), relative to infants of racially discordant parents. No such associations were observed among infants with prior live-born siblings. In fact, in this latter population, infants of racially concordant parents tended to have a lower risk of SIDS than those of discordant parents. This study suggests that a portion of SIDS cases, particularly among first live-born infants, may be due to parental HLA sharing. However, final determination of the existence of this relationship requires actual HLA typing of parents of both cases and controls. FAU - Li, D K AU - Li DK AD - Department of Epidemiology, School of Public Health and Community Medicine, University of Washington, Seattle. FAU - Daling, J R AU - Daling JR LA - eng PT - Journal Article PL - England TA - Paediatr Perinat Epidemiol JT - Paediatric and perinatal epidemiology JID - 8709766 RN - 0 (HLA Antigens) SB - IM MH - Adult MH - Case-Control Studies MH - Female MH - Fetal Death MH - HLA Antigens/genetics MH - Humans MH - Infant, Newborn MH - Parents MH - *Racial Groups MH - Risk Factors MH - Sudden Infant Death/*ethnology/etiology MH - Washington/epidemiology EDAT- 1993/07/01 00:00 MHDA- 1993/07/01 00:01 CRDT- 1993/07/01 00:00 PHST- 1993/07/01 00:00 [pubmed] PHST- 1993/07/01 00:01 [medline] PHST- 1993/07/01 00:00 [entrez] AID - 10.1111/j.1365-3016.1993.tb00403.x [doi] PST - ppublish SO - Paediatr Perinat Epidemiol. 1993 Jul;7(3):253-62. doi: 10.1111/j.1365-3016.1993.tb00403.x.