| Disease ID | Source | Name | Description |
| 300918 | OMIM | Olmsted syndrome, X-linked (OLMSX) | A rare congenital disorder characterized by bilateral mutilating palmoplantar keratoderma and periorificial keratotic plaques with severe itching at all lesions. Diffuse alopecia, constriction of digits, and onychodystrophy have also been reported. Infections and squamous cell carcinomas can arise on the keratotic areas. The digital constriction may progress to autoamputation of fingers and toes. The disease is caused by variants affecting the gene represented in this entry. |
| 308800 | OMIM | Keratosis follicularis spinulosa decalvans X-linked (KFSDX) | A rare disorder affecting the skin and the eye. Affected men show thickening of the skin of the neck, ears, and extremities, especially the palms and soles, loss of eyebrows, eyelashes and beard, thickening of the eyelids with blepharitis and ectropion, and corneal degeneration. The disease is caused by variants affecting the gene represented in this entry. |
| 301014 | OMIM | Osteogenesis imperfecta 19 (OI19) | An X-linked form of osteogenesis imperfecta, a connective tissue disorder characterized by low bone mass, bone fragility and susceptibility to fractures after minimal trauma. Disease severity ranges from very mild forms without fractures to intrauterine fractures and perinatal lethality. Extraskeletal manifestations, which affect a variable number of patients, are dentinogenesis imperfecta, hearing loss, and blue sclerae. OI19 is characterized by prenatal fractures, short stature, white sclerae, variable scoliosis and pectal deformity, striking tibial anterior angulation and generalized osteopenia. The disease is caused by variants affecting the gene represented in this entry. |
| 308205 | OMIM | IFAP syndrome with or without BRESHECK syndrome (IFAPS) | A syndrome characterized by a peculiar triad of follicular ichthyosis, total or subtotal atrichia, and photophobia of varying degree. Histopathologically, the epidermal granular layer is generally well-preserved or thickened at the infundibulum. Hair follicles are poorly developed and tend to be surrounded by an inflammatory infiltrate. A subgroup of patients is described with lamellar rather than follicular ichthyosis. Non-consistent features may include growth and psychomotor retardation, aganglionic megacolon, seizures and nail dystrophy. The disease is caused by variants affecting the gene represented in this entry. |