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Title: Differentiation of hereditary spastic paraparesis from primary lateral sclerosis in sporadic adult-onset upper motor neuron syndromes
Authors: Brugman, Frans ×
Veldink, Jan H
Franssen, Hessel
de Visser, Marianne
de Jong, J M B Vianney
Faber, Carin G
Kremer, Berry H P
Schelhaas, H Jurgen
van Doorn, Pieter A
Verschuuren, Jan J G M
Bruyn, Richard P M
Kuks, Jan B M
Robberecht, Wim
Wokke, John H J
van den Berg, Leonard H #
Issue Date: Apr-2009
Publisher: American Medical Association
Series Title: Archives of Neurology vol:66 issue:4 pages:509-514
Abstract: OBJECTIVE: To study whether clinical characteristics can differentiate sporadic presentations of hereditary spastic paraparesis (HSP) from primary lateral sclerosis (PLS). Differentiation between these diseases is important for genetic counseling and prognostication. DESIGN: Case series. SETTING: Tertiary referral center. PATIENTS: One hundred four Dutch patients with an adult-onset, sporadic upper motor neuron syndrome of at least 3 years' duration. Hereditary spastic paraparesis was genetically confirmed in 14 patients (7 with SPG4 and 7 with SPG7 mutations). RESULTS: All 14 patients with the SPG4 or SPG7 mutation had symptom onset in the legs, and 1 of the patients with the SPG7 mutation also developed symptoms in the arms. Of the other 90 patients, 78 (87%) had symptom onset in the legs. Thirty-six patients developed a PLS phenotype (bulbar region involvement), 15 had a phenotype that was difficult to classify as similar to HSP or PLS (involvement of legs and arms only), and 39 continued to have a phenotype similar to typical HSP (involvement of the legs only). Median age at onset was lower in patients with the SPG4 or SPG7 mutation (39 [range, 29-69] years), but there was considerable overlap with patients with the PLS phenotype (52 [range, 32-76] years). No differences were found in the features used by previous studies to distinguish HSP from PLS, including evidence of mild dorsal column impairment (decreased vibratory sense or abnormal leg somatosensory evoked potentials), symptoms of urinary urgency, or mild electromyographic abnormalities. CONCLUSIONS: In most patients with a sporadic adult-onset upper motor neuron syndrome, differentiation of sporadic presentations of HSP from PLS based on clinical characteristics is unreliable and therefore depends on results of genetic testing.
URI: 
ISSN: 0003-9942
Publication status: published
KU Leuven publication type: IT
Appears in Collections:Research Group Experimental Neurology
Laboratory for Neurobiology (Vesalius Research Center)
× corresponding author
# (joint) last author

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