Neonatal Lupus Erythematosus

Clinical Findings and Pathogenesis

Lee, Lela A.

University of Colorado School of Medicine, Denver Health Medical Center, Denver, Colorado, USA

Correspondence and reprint requests to: Lela A. Lee, Denver Health Medical Center, Mail Code 4000, 777 Bannock St., Denver, CO 80204, USA. Email: [email protected]

Abbreviations: ANA, antinuclear antibodies; CHB, congenital heart block; NLE, neonatal lupus erythematosus.

Manuscript received September 16, 2002; revised November 10, 2002; accepted for publication January 13, 2003

Journal of Investigative Dermatology Symposium Proceedings 9:p 52-56, January 2004.

Neonatal lupus erythematosus is an uncommon disease associated with maternal autoantibodies to proteins of the Ro/La (SSA/SSB) family. The clinical findings most often reported are third-degree heart block and cutaneous lupus lesions, but a significant number of children have cardiomyopathy, hepatobiliary disease, or hematologic cytopenias. The consistent presence of maternal autoantibodies and the transient nature of the disease implicate maternal autoantibodies as the cause of the disease, and developing animal models support the concept that the autoantibodies are pathogenic. Only a minority of babies exposed to the autoantibodies develop disease, however, and mothers and their babies have different disease manifestations. Thus, additional factors are likely to be important in determining disease expression.