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Batten's Sydrome

Synonyms: Neuronal ceroid lipofuscinosis juvenile type, JNCL, Vogt-Spielmeyer disease

This is one of a group of childhood autosomal recessive lysosomal disorders with profound degenerative effects on the central nervous system. It was first described by Batten, a British paediatrician, in 1903.1

Pathogenesis

It is caused by a mutation in the CLN3 gene at gene locus 16p12.1. This group of diseases represents a new class of lysosomal storage disorders.2
Of the nine clinical variants (CLN1-CLN9), six have been genetically identified.3 As well as the CLN3 gene these include CLN1, CLN2, CLN5, CLN6 and CLN8.

Epidemiology

It is a rare condition with a variable incidence across different countries.

  • In western Germany it has been estimated as occurring in 0.71 per 100,000 live births.4
  • It occurs in about 1 to 5 cases per 100,000 generally, but in Finland the figure is around 8 per 100,000. There appear to be slightly different mutations across Europe.

Risk factors

As with other rare autosomal recessives, the main risk is consanguineous marriage. If a child is affected both parents will be carriers. The risk for further children is that:

  • 1 in 4 will have the disease
  • 2 in 4 will be normal but carriers of the gene
  • 1 in 4 will be normal and not a carrier.
Presentation

Onset is between 5 and 10 years old.

  • There is often rapid deterioration of vision and a slower, but progressive deterioration of intellect.
  • Seizures and psychosis develop later.
  • There may be features of Parkinson's disease.
  • In some cases, the early signs are subtle, taking the form of personality and behaviour changes, slow learning, clumsiness, or stumbling.
Examination

The fundi show pigmentary degeneration rather similar to retinitis pigmentosa. Referral to an ophthalmologist is useful as abnormal findings may be noted on funduscopy examination, and fluorescein angiography.

Investigation

The pathological features are severe, widespread neuronal degeneration resulting in simple retinal atrophy and in massive loss of brain substance and accumulation of lipofuscin in neuronal perikaryon.5There are a number of useful tests:

  • There is a deficiency of leukocyte peroxidase. This might also be useful in detecting heterozygotes.
  • There are vacuolated peripheral blood lymphocytes and characteristic ultrastructural fingerprint profiles.6
  • Both homozygotes and heterozygotes can be identified on the basis of metachromasia in skin fibroblasts in cell culture.7
  • Polyacrylamide gel electrophoresis (PAGE) shows low molecular weight peptides in the urine and this may be a specific marker.8
  • PAGE can also be used on chorionic villous samples for pre-natal diagnosis.
  • MRI shows general brain atrophy, more in the cerebrum than the cerebellum. Density is reduced in the thalami.
  • If MRI spectroscopy is available it will show almost complete loss of N-acetylaspartate, reduction in creatine- and choline-containing compounds, raised levels of myoinositol and raised lactate in both grey and white areas.
  • Direct gene analysis has been used for antenatal diagnosis.9
Management

There is little that can be done for the child, but genetic counselling for the parents is essential.

  • Anticonvulsants will help the management of epilepsy in children and adolescents.
  • If there are features of Parkinsonism L dopa seems to be of benefit, but not selegeline.10

Other treatments are of no proven value. Vitamin E, other antioxidants and selenium are all without benefit and in the few cases where bone marrow transplantation has been tried there has been no benefit.
However, there is the prospect of new therapies following use of allogeneic hematopoietic stem cell transplantation.11 Normal enzymatic activity has been reported, without the need for any medication. Reconstruction of the central nervous system has also been reported. However numbers of treated patients are small and further research is needed on safety.

Prognosis

There will be mental impairment, worsening seizures, and progressive loss of sight and motor skills. Eventually, they become blind, bedridden, and demented. Batten's disease is often fatal by the late teens or twenties.


Document References
  1. Batten, F. E. Cerebral degeneration with symmetrical changes in the macula in two members of a family. Trans. Ophthal. Soc. U.K. 23: 386-390, 1903.
  2. Bennett MJ, Hofmann SL; The neuronal ceroid-lipofuscinoses (Batten disease): a new class of lysosomal storage diseases. J Inherit Metab Dis. 1999 Jun;22(4):535-44. [abstract]
  3. Persaud-Sawin DA, Mousallem T, Wang C, et al; Neuronal ceroid lipofuscinosis: a common pathway? Pediatr Res. 2007 Feb;61(2):146-52. [abstract]
  4. Claussen M, Heim P, Knispel J, et al; Incidence of neuronal ceroid-lipofuscinoses in West Germany: variation of a method for studying autosomal recessive disorders. Am J Med Genet. 1992 Feb 15;42(4):536-8. [abstract]
  5. OMIM; Ceroid Lipofuscinosis (CLN3)
  6. Brod RD, Packer AJ, Van Dyk HJ; Diagnosis of neuronal ceroid lipofuscinosis by ultrastructural examination of peripheral blood lymphocytes. Arch Ophthalmol. 1987 Oct;105(10):1388-93. [abstract]
  7. Danes BS, Bearn AG; Metachromasia and skin-fibroblast cultures in juvenile familial amaurotic idiocy. Lancet. 1968 Oct 19;2(7573):855-6.
  8. LaBadie GU, Pullarkat RK; Low molecular weight urinary peptides in ceroid-lipofuscinoses: potential biochemical markers for the juvenile subtype. Am J Med Genet. 1990 Dec;37(4):592-9. [abstract]
  9. Munroe PB, Rapola J, Mitchison HM, et al; Prenatal diagnosis of Batten's disease. Lancet. 1996 Apr 13;347(9007):1014-5. [abstract]
  10. Aberg LE, Rinne JO, Rajantie I, et al; A favorable response to antiparkinsonian treatment in juvenile neuronal ceroid lipofuscinosis. Neurology. 2001 May 8;56(9):1236-9. [abstract]
  11. Krivit W; Allogeneic stem cell transplantation for the treatment of lysosomal and peroxisomal metabolic diseases. Springer Semin Immunopathol. 2004 Nov;26(1-2):119-32. Epub 2004 Sep 25. [abstract]

Internet and Further Reading Acknowledgements EMIS is grateful to Dr Hayley Willacy for writing this article. The final copy has passed scrutiny by the independent Mentor GP reviewing team. ©EMIS 2007.
DocID: 1849
Document Version: 21
DocRef: bgp1348
Last Updated: 5 Jul 2007
Review Date: 4 Jul 2009

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