GTR Home > Conditions/Phenotypes > Cockayne syndrome type C


Cockayne syndrome is a rare disorder characterized by short stature and an appearance of premature aging. Features of this disorder include a failure to gain weight and grow at the expected rate (failure to thrive), abnormally small head size (microcephaly), and impaired development of the nervous system. Affected individuals have an extreme sensitivity to sunlight (photosensitivity), and even a small amount of sun exposure can cause a sunburn. Other possible signs and symptoms include hearing loss, eye abnormalities, severe tooth decay, bone abnormalities, and changes in the brain that can be seen on brain scans. Cockayne syndrome can be divided into subtypes, which are distinguished by the severity and age of onset of symptoms. Classical, or type I, Cockayne syndrome is characterized by an onset of symptoms in early childhood (usually after age 1 year). Type II Cockayne syndrome has much more severe symptoms that are apparent at birth ... (congenital). Type II Cockayne syndrome is sometimes called cerebro-oculo-facio-skeletal (COFS) syndrome or Pena-Shokeir syndrome type II. Type III Cockayne syndrome has the mildest symptoms of the three types and appears later in childhood. [from GHR] more

Clinical features

  • Proteinuria
  • Cerebral calcification
  • Large hands
  • Hypertension
  • Abnormality of vision evoked potentials
  • Abnormal auditory evoked potentials
  • Long foot
  • Gait disturbance
  • Intellectual disability
  • Microcephaly
  • Salt and pepper retinopathy
  • Thymic hormone decreased
  • Prematurely aged appearance
  • Glomerulosclerosis
  • Mandibular prognathia
  • Hearing impairment
  • Abnormality of the pinna
  • Retinal degeneration
  • Optic atrophy
  • Dementia
  • Atypical scarring of skin
  • Abnormality of skin pigmentation
  • Flexion contracture
  • Normal pressure hydrocephalus
  • Atherosclerosis
  • Abnormal peripheral myelination
  • Severe short stature
  • Dermal atrophy
  • Abnormal CNS myelination
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