The post-surgical variable clinical picture of shoulder disability is related not only to the accessory nerve injury, but also to the secondary glenohumeral stiffness resulting from the scapulohumeral girdle muscles weakness and postoperative forced immobility. Physical therapy aimed to early recover passive motion and to avoid the occurrence of joint fibrosis has been shown to have a real contributory role in decreasing shoulder complaints and improving the patients' QOL.
Chronic lymphocytic leukaemia (CLL) has been associated with an increased incidence of second neoplasms, especially skin cancers such as basal and squamous cell carcinomas. No association with the rarer skin cancer, the Merkel cell tumour (MCT), has previously been reported. Two patients with MCT had a previous diagnosis of CLL. MCT is an aggressive skin cancer, as up to 45% of patients have lymph node involvement at presentation and 5-year disease-free survival is as low as 30%. It is most commonly found on sun-exposed areas of the body, and ultraviolet radiation together with drug-induced or CLL-induced immunosuppression may be the underlying mechanism in the observed relationship between CLL and other skin cancers.
Aim
To describe the clinical and neurogenetic spectrum of paediatric‐onset hereditary spastic paraplegias (HSPs) diagnosed in our unit.
Method
We report on 47 patients (30 males, 17 females; mean [SD] age 12y 7mo [6y 2mo], range 4–34y) clinically diagnosed with an HSP at the Child Neurology Unit, IRCCS‐ASMN (Reggio Emilia, Italy) between 1990 and 2018, who were genetically investigated by means of single‐gene direct sequencing and/or next‐generation sequencing technologies (targeted panels, whole‐exome sequencing [WES]).
Results
Complex forms prevailed slightly (n=26), autosomal dominant being the main inheritance pattern (n=11), followed by recessive (n=5) and X‐linked (n=1). A definite genetic diagnosis was achieved in 17 patients. Spastic paraplegia 3A (n=4) was the most frequent cause of autosomal dominant HSP in our cohort, while no genetic variant prevailed in autosomal recessive forms and pathogenic/likely pathogenic variants were disclosed in a wide range of different genes.
Interpretation
We found wide phenotypic and genetic heterogeneity. With increasing accessibility to WES, a higher number of patients receive a diagnosis, allowing detection of variants in ultra‐rare disease‐causing genes and refining genotype–phenotype correlations.
What this paper adds
A genetic diagnosis of paediatric‐onset hereditary spastic paraplegia was achieved in one‐third of patients.
Pathogenic/likely pathogenic variants in rare genes were found.
Genotypic and phenotypic heterogeneity favours targeted panel/whole‐exome sequencing for diagnosis.
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