A Case of Hyperimmunoglobulinemia D Syndrome Successfully Treated with Canakinumab

الملخص EN

Hyperimmunoglobulinemia D syndrome is a rare autosomal recessive autoinflammatory disorder caused by mutations in the mevalonate kinase gene (MVK).

In a proportion of patients, however, no MVK mutations are detected.

Although various standard anti-inflammatory drugs have been tried, until now there is no consensus about how HIDS should be treated.

We present a case of HIDS in an 8-year-old girl whose clinical picture had started before the end of the first year of life.

The patient had consistently elevated IgD levels but no mutations were found after a full-length analysis of the MVK gene.

The method of MVK mutational analysis is presented in details.

Treatment with canakinumab in a final single dose of 4 mg/kg every 4 weeks resulted in the disappearance of febrile attacks and a considerable improvement of patients’ quality of life during a 12-month follow-up period.

The drug has been well tolerated, and no side effects were observed.