Watson syndrome

A RASopathy characterized by pulmonic stenosis, cafe-au-lait macules, decreased intellectual ability, and short stature that has_material_basis_in heterozygous mutation in the NF1 gene on chromosome 17q11.2.

Legius syndrome

A RASopathy characterized by multiple cafe-au-lait macules and possible skin fold freckling without neurofibromas, optic gliomas, or Lisch nodules that has_material_basis_in heterozygous mutation in the SPRED1 gene on chromosome 15q14.

McCune Albright syndrome

A syndrome that is characterized by polyostotic fibrous dysplasia, precocious puberty, and caf-au-lait spots and has_material_basis_in spontaneous post zygotic missense mutation at ARG201 or Gln227 of the GNAS gene during embryogenesis.

familial progressive hyperpigmentation with or without hypopigmentation

A skin disease characterized by progressive, diffuse hyperpigmentation of variable intensity sometimes associated with cafe-au-lait macules and larger hypopigmented ash-leaf macules that has_material_basis_in heterozygous mutation in the KITLG gene on chromosome 12q21.32.

neurofibromatosis 1

A neurofibromatosis characterized by multiple cafe-au-lait macules, skin fold freckling, neurofibromas, optic gliomas, Lisch nodules or choroidal abnormalities in the eye, or a specific bone abnormality that has_material_basis_in the NF1 gene on chromosome 17q11.2. Bone abnormalities include a distinctive osseous lesion such as sphenoid dysplasia, anterolateral bowing of the tibia, or pseudarthrosis of a long bone.