Context: The clinical recognition of familial central precocious puberty (CPP) has significantly increased in the last years. This fact can be related to the recent descriptions of genetic causes associated with this pediatric condition, such as loss-of-function mutations of two imprinted genes (MKRN3 and DLK1). Inherited defects in both genes cause paternally inherited CPP. However, no genetic abnormality has been described in families with maternally inherited CPP so far.
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