Familial, long-term pollakisuria as initial manifestation of HSP4 due to the SPAST variant c.683-2A>C

•Long-term pollakisuria may be the initial manifestation of HSP4.•HSP4 may take a mild course over years, allowing the patients to remain in a demanding job.•Typical phenotypic features of HSP4 may have a late onset. Hereditary spastic paraplegia type-IV (HSP4) is the most common of the autosomal-do...

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Bibliographic Details
Published in:Journal of clinical neuroscience 2019-06, Vol.64, p.4-5
Main Authors: Finsterer, Josef, Wakil, Salma M., Laccone, Franco
Format: Article
Language:English
Subjects:
Genetics
Hereditary spastic paraplegia
Mutation
Spasticity
Spastin
Urinary urgency
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Summary:•Long-term pollakisuria may be the initial manifestation of HSP4.•HSP4 may take a mild course over years, allowing the patients to remain in a demanding job.•Typical phenotypic features of HSP4 may have a late onset. Hereditary spastic paraplegia type-IV (HSP4) is the most common of the autosomal-dominant HSPs. Though urinary dysfunction is a frequent phenotypic feature, long-term pollakisuria as the initial manifestation of HSP4 has not been reported. The patient is a 56yo female with an uneventful history until age 46y, when she developed pollakisuria. After another 6y she developed a coordination disorder, recognized as difficulties with running and climbing stairs. Since 6 m prior to presentation, she recognized mild dysphagia. The further history was positive for strabismus, varicosity, hepatopathy, thiamin-deficiency, niacin-deficiency, lumbago, cutaneous borelliosis, abortive psoriasis, lumbar spondylosis, osteochondrosis L5/S1, and HLA-B27-positive rheumatoid arthritis. Clinical exam revealed mild weakness for left foot extension (M5-), a right subclonic patella tendon reflex, and mildly impaired left hook transition. Nerve conduction studies revealed subclinical polyneuropathy. Ophthalmologic investigations, and MRI of the brain and spinal cord were non-informative. Genetic work-up revealed the novel variant c.683-2A > C in the SPAST gene. The family history was positive for HSP in her mother and sister. Pure HSP4 was diagnosed. Pure HSP4 may manifest at onset with year-long pollakisuria exclusively. HSP4 may take a mild course over years, allowing the patient to do sports and to practice a demanding job.
ISSN:0967-5868
1532-2653
DOI:10.1016/j.jocn.2019.03.067