" /> Noonan syndrome-like disorder with or without juvenile myelomonocytic leukemia - CISMeF





Preferred Label : Noonan syndrome-like disorder with or without juvenile myelomonocytic leukemia;

Symbol : NSLL;

CISMeF acronym : NSLL;

Type : Phenotype, molecular basis known;

Alternative titles and symbols : Cbl mutation-associated syndrome; Cbl syndrome;

Description : Noonan syndrome-like disorder is a developmental disorder resembling Noonan syndrome (NS1; 163950) and characterized by facial dysmorphism, a wide spectrum of cardiac disease, reduced growth, variable cognitive deficits, and ectodermal and musculoskeletal anomalies. There is extensive phenotypic heterogeneity and variable expressivity (summary by Martinelli et al., 2010). Patients with heterozygous germline CBL mutations have an increased risk for certain malignancies, particularly juvenile myelomonocytic leukemia (JMML; 607785), as also seen in patients with Noonan syndrome (summary by Niemeyer et al., 2010).;

Inheritance : Autosomal dominant;

Molecular basis : Caused by mutation in the Cas-Br-M murine ecotropic retroviral transforming sequence homolog gene (CBL, 165360.0001);

Neoplasia : Increased susceptibility to juvenile myelomonocytic leukemia;

Prefixed ID : #613563;

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04/05/2025


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