INTERSTITIAL LUNG DISEASE

Lymphangioleiomyomatosis: a case–control study of perinatal and early life events

C I Whale¹, S R Johnson², K G Phillips¹, S A Newton¹, S A Lewis¹, A E Tattersfield¹

¹ Division of Respiratory Medicine, City Hospital, Nottingham, UK
² Division of Therapeutics, University Hospital, Nottingham

Correspondence to:
Correspondence to:
Professor A E Tattersfield, Clinical Sciences Building, City Hospital, Hucknall Road, Nottingham NG5 1PB, UK;
anne.tattersfield{at}nottingham.ac.uk

Background: Lymphangioleiomyomatosis (LAM), a rare disease affecting women, is caused by somatic mutations in the tuberous sclerosis complex genes.

Methods: A case–control questionnaire study was carried out examining parental and family history, prenatal events, and early life events to try to shed light on the aetiology of the condition. Forty five patients identified from a national LAM register completed a questionnaire and 31 were compared with 117 age and sex matched control subjects using conditional logistic regression.

Results: No differences were found in perinatal events, childhood infections, and parental or family history, except that patients were more likely to be an only child (odds ratio (OR) 4.3 (95% confidence interval (CI), 1.5 to 11.8)) and have a relative with uterine fibroids (OR 4.2 (1.4 to 13)). Patients with LAM had had fewer pregnancies and fewer children but no differences in miscarriage rates. A non-matched analysis using all 45 cases and 117 controls gave similar results.

Conclusions: No features in the family history, perinatal events, or early life events were detected that were associated with having LAM. Being more likely to be an only child and having an increased family history of uterine fibroids may, if confirmed, indicate some differences in reproductive function within the families of affected individuals.

Keywords: lymphangioleiomyomatosis; questionnaire survey; aetiology

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This article has been cited by other articles:

• Johnson, S R, Whale, C I, Hubbard, R B, Lewis, S A, Tattersfield, A E (2004). Survival and disease progression in UK patients with lymphangioleiomyomatosis. Thorax 59: 800-803 [Abstract] [Full Text]