eMedicine Specialties > Pediatrics: Genetics and Metabolic Disease > Genetics
Cockayne Syndrome: Follow-up
Updated: Nov 24, 2009
Follow-up
Further Inpatient Care
- Use of a gastrostomy tube may prevent malnutrition in patients with Cockayne syndrome (CS) who feed poorly.
Further Outpatient Care
- Monitor patients for hypertension, renal function, hearing loss, and dental caries.
- Physical therapy delays the onset of joint contractures.
Transfer
- Consider transfer or referral to a facility with expertise in cultured skin fibroblasts because very few laboratory personnel have expertise in this technique.
Deterrence/Prevention
- Advise patients to avoid excessive sun exposure and to use sunscreen liberally when outdoors.
Complications
- Mental retardation
- Growth failure
- Progressive pigmentary retinopathy
- Sensorineural hearing loss
- Joint contractures and ataxia
- Hypertension
- Photosensitivity
- Premature death
Prognosis
- Cockayne syndrome type 1 (CNK1) is an autosomal recessive disorder resulting in growth failure and progressive neurologic dysfunction.
- Death usually occurs during adolescence, but survival into adulthood is possible.
Patient Education
- Recommend genetic counseling because each sibling subsequently born to the parents of an affected child will have a 25% risk of having CNK1.
- Cultured cells obtained from patients with Cockayne syndrome are hypersensitive to the lethal effects of UV. Also, the normal recovery in DNA and RNA synthesis after UV exposure does not occur in those cells. Measuring RNA synthesis and the secondary DNA synthesis of cultured amniocytes after irradiation with UV light has been successful in the prenatal diagnosis of Cockayne syndrome. Prenatal diagnosis based on molecular analysis in future pregnancies may also be possible if the mutations in the affected child are known.2
- Advise parents that treatment is supportive and based on symptoms.
- Optimize neurologic and neurosensory abilities in the patient.
Miscellaneous
Medicolegal Pitfalls
- Failure to make the diagnosis and offer genetic counseling to parents of an affected child
Special Concerns
- A severe form of Cockayne syndrome type 1 (CKN1) presents within the first 2 years of life. These children have low birth weight, congenital cataracts, microcephaly, and severe neurologic deficits at younger than 1 year.
More on Cockayne Syndrome |
| Overview: Cockayne Syndrome |
| Differential Diagnoses & Workup: Cockayne Syndrome |
| Treatment & Medication: Cockayne Syndrome |
Follow-up: Cockayne Syndrome |
| Multimedia: Cockayne Syndrome |
| References |
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References
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[Guideline] Cunniff C. Prenatal screening and diagnosis for pediatricians. Pediatrics. Sep 2004;114(3):889-94. [Medline].
Cao H, Williams C, Carter M, Hegele RA. CKN1 (MIM 216400): mutations in Cockayne syndrome type A and a new common polymorphism. J Hum Genet. 2004;49(1):61-3. [Medline].
Chien YH, Chou HC, Hwu WL. Cockayne syndrome in a family. Acta Paediatr Taiwan. Jan-Feb 2002;43(1):46-9. [Medline].
Cleaver JE, Thompson LH, Richardson AS, States JC. A summary of mutations in the UV-sensitive disorders: xeroderma pigmentosum, Cockayne syndrome, and trichothiodystrophy. Hum Mutat. 1999;14(1):9-22. [Medline].
Greenhaw GA, Hebert A, Duke-Woodside ME, et al. Xeroderma pigmentosum and Cockayne syndrome: overlapping clinical and biochemical phenotypes. Am J Hum Genet. Apr 1992;50(4):677-89. [Medline].
Higginbottom MC, Griswold WR, Jones KL, et al. The Cockayne syndrome: an evaluation of hypertension and studies of renal pathology. Pediatrics. Dec 1979;64(6):929-34. [Medline].
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Lehmann AR, Francis AJ, Giannelli F. Prenatal diagnosis of Cockayne's syndrome. Lancet. Mar 2 1985;1(8427):486-8. [Medline].
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Proops R, Taylor AM, Insley J. A clinical study of a family with Cockayne's syndrome. J Med Genet. Aug 1981;18(4):288-93. [Medline].
Rapin I, Weidenheim K, Lindenbaum Y. Cockayne syndrome in adults: review with clinical and pathologic study of a new case. J Child Neurol. Nov 2006;21(11):991-1006. [Medline].
Ren Y, Saijo M, Nakatsu Y, et al. Three novel mutations responsible for Cockayne syndrome group A. Genes Genet Syst. Feb 2003;78(1):93-102. [Medline].
Sugita T, Ikenaga M, Suehara N, et al. Prenatal diagnosis of Cockayne syndrome using assay of colony-forming ability in ultraviolet light irradiated cells. Clin Genet. Sep 1982;22(3):137-42. [Medline].
Tan WH, Baris H, Robson CD, Kimonis VE. Cockayne syndrome: the developing phenotype. Am J Med Genet A. Jun 1 2005;135(2):214-6. [Medline].
Traboulsi EI, De Becker I, Maumenee IH. Ocular findings in Cockayne syndrome. Am J Ophthalmol. Nov 15 1992;114(5):579-83. [Medline].
Venema J, Mullenders LH, Natarajan AT, et al. The genetic defect in Cockayne syndrome is associated with a defect in repair of UV-induced DNA damage in transcriptionally active DNA. Proc Natl Acad Sci U S A. Jun 1990;87(12):4707-11. [Medline].
Further Reading
Keywords
Cockayne syndrome, Cockayne syndrome type A, CS, CAS, cachectic dwarfism, premature aging, growth failure, pigmentary retinal degeneration, Cockayne syndrome type B, treatment, diagnosis, symptoms
Follow-up: Cockayne Syndrome