RT Journal Article
SR Electronic
T1 Maternal age and family history are risk factors for ankylosing spondylitis.
JF The Journal of Rheumatology
JO J Rheumatol
FD The Journal of Rheumatology
SP 2182
OP 2185
VO 30
IS 10
A1 F Javier Jiménez-Balderas
A1 Abraham Zonana-Nacach
A1 M Lourdes Sánchez
A1 Juan O Talavera
A1 Leonor Barile-Fabris
A1 Martha E Pérez-Rodríguez
A1 Jorge Arellano
A1 Antonio Fraga
YR 2003
UL http://www.jrheum.org/content/30/10/2182.abstract
AB OBJECTIVE: To investigate prevalence and gender distribution in parents of children with ankylosing spondylitis (AS). METHODS: Family history of AS (parents, uncles, and aunts), maternal age at delivery, and consecutive pregnancy number were assessed in the relatives of 40 Mexican Mestizo patients with definite AS (New York Criteria). RESULTS: We evaluated the family history of AS in 34 families of 40 AS patients; 12 with none, 4 with a paternal history (4 healthy fathers with a brother with AS) (odds ratio, OR, 1.37, p = 0.75), 15 with a maternal history of AS, (15 healthy mothers with a brother with AS) (OR 1.4, p = 0.55), and 3 with both lines (OR 0.84, p = 0.92). In these families AS was more frequent in males (29%) than in females (10%), OR 3.40 (95% confidence interval, CI: 1.43-8.29, p = 0.003). Juvenile onset was more common in the offspring of mothers with family history (72%) (OR 13.0, 95% CI: 1.68-147.48, p = 0.009). The number of first-born children with AS (18%) was similar to the later-born children (23%) (OR 1.37, 95% CI: 0.38-5.31, p = 0.78). The frequency of AS increased when the maternal age at delivery was < or = 30 years (OR 0.20, 95% CI: 0.04-0.75, p = 0.01). CONCLUSION: In Mexican Mestizo patients, there is no correlation between the risk for AS and the gender of the affected parent. However we found an association between juvenile onset and maternal family history with an increased incidence in patients with younger mothers.