alexa Osteoclast-poor human osteopetrosis due to mutations in the gene encoding RANKL.
Orthopaedics

Orthopaedics

Journal of Osteoporosis and Physical Activity

Author(s): Sobacchi C, Frattini A, Guerrini MM, Abinun M, Pangrazio A,

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Abstract Autosomal recessive osteopetrosis is usually associated with normal or elevated numbers of nonfunctional osteoclasts. Here we report mutations in the gene encoding RANKL (receptor activator of nuclear factor-KB ligand) in six individuals with autosomal recessive osteopetrosis whose bone biopsy specimens lacked osteoclasts. These individuals did not show any obvious defects in immunological parameters and could not be cured by hematopoietic stem cell transplantation; however, exogenous RANKL induced formation of functional osteoclasts from their monocytes, suggesting that they could, theoretically, benefit from exogenous RANKL administration. This article was published in Nat Genet and referenced in Journal of Osteoporosis and Physical Activity

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