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Cutaneous onchocerciasis in Dumbu, a pastoral area in the North-West region of Cameroon: diagnostic challenge and socio-economic implications

Mohammed Saleh
Joost Commandeur
Renata Bocciardi


Fibrodysplasia ossificans progressiva is a rare autosomal dominantly inherited disorder of connective tissue caused by mutations in the gene encoding for  ACVR1/ALK2, a bone morphogenetic protein type I receptor. It is mainly characterized by congenital malformations of the great toes and the formation of  qualitatively normal bone in extra-skeletal sites leading to severe disability and eventually death. We present a sporadic case from Northern Tanzania with a minor  unilateral hallux anomaly and the common ACVR1 c.617G>A mutation.

Key words: Fibrodysplasia ossificans progressiva, heterotopic ossification, hallux valgus, recurrent ACVR1 mutation

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eISSN: 1937-8688