Bathing Suit Ichthyosis

Watchlist

(log in to enable)

Retrieved

2021-01-23

Source

Orphanet

Trials

—

Genes

TGM1, ALOX12B, ABCA12, ALOXE3, CDKN1C, IGF2, H19-ICR

Drugs

Liarozole, Recombinant human transglutaminase 1 encapsulated into liposomes, Talarozole

Liarozole, Recombinant human transglutaminase 1 encapsulated into liposomes, Talarozole, Tazarotene, Trifarotene, replication-incompetent, non-integrating, herpes simplex virus 1 vector expressing the human transglutaminase-1 enzyme

Interested in hearing about new therapies?

Bathing suit ichthyosis (BSI) is a rare variant of autosomal recessive congenital ichthyosis (ARCI; see this term) characterized by the presence of large dark scales in specific areas of the body.

Epidemiology

Less than 20 patients are reported in the literature.

Clinical description

This particular skin aspect appears after the sheading of a collodion membrane observed at birth. Contrarily to other forms of ARCI, the members (in exception of the folds) and the face are not affected by ichthyosis. Scales are present on warmer skin areas such as the trunk, the scalp, and the axillary region. On affected areas, the patient present with large dark scales similar to those observed in lamellar ichthyosis (LI).

Etiology

BSI is caused by specific thermo-sensitive mutations in the TGM1 gene (encoding transglutaminase 1, involved in the cornification of the stratum corneum). Affected skin areas (warmer areas), show a clearly reduced enzyme activity in contrast to healthy skin areas that demonstrate an almost normal enzyme activity. Transmission is autosomal recessive.