Griscelli syndrome is a rare autosomal recessive disorder characterized by partial albinism with variable immunodeficiency. Silvery gray hair with large, clumped melanosomes on microscopy of hair shafts are diagnostic. The commonest complication leading to mortality includes lymphohistiocytic proliferation in various organs, including the brain. We present a child with classic clinical features...

Dr. Paulo B.N. Liberalesso – Rua Benjamin Constant 90 / 73 80060-050 Curitiba PR Brasil. E-mail: [email protected] In 1978 in France, Claude Griscelli and Michel Prunieras reported the cases of two girls who presented with silver gray hair, several episodes of fever, hepatosplenomegaly and pancytopenia. The combination of pigment dilution and recurrent infectious episodes raised the dia...

1Department of Pediatric Hematology/Oncology, Mofi d Children Hospital, Shahid Beheshti Medical University, Tehran, Iran 2Molecular Immunology Research Center; and Department of Immunology, School of Medicine, Tehran University of Medical Sciences, Tehran, Iran 3Research Center for Immunodefi ciencies, Pediatrics Center of Excellence, Children’s Medical Center, Tehran University of Medical Scie...

Myosin Va is an actin-based motor molecule, one of a large family of unconventional myosins. In humans, mutations in MYO5A cause Griscelli syndrome type 1 and Elejalde syndrome, diseases characterized by pigmentation defects and the prepubescent onset of severe neurological deficits that ultimately lead to a shortened lifespan. Mutations in the Myo5a gene in mouse cause the dilute series of mou...