Noonan syndrome-like disorder with juvenile myelomonocytic leukemia

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Noonan syndrome-like disorder with juvenile myelomonocytic leukemia

Synonyms: CBL syndrome | Noonan syndrome-like disorder with JMML

A rare genetic polymalformative syndrome characterized by a Noonan-like phenotype associated with increased risk of developing juvenile myelomonocytic leukemia (JMML). The Noonan-like (NS) phenotype includes dysmorphic facial features (i.e. high forehead hypertelorism downslanting palpebral fissures ptosis low-set ears prominent philtrum and short neck with or without pterygium colli) developmental delay hypotonia and small head circumference. It can be associated with congenital heart defects or cardiomyopathy ectodermal anomalies and short stature. The NS phenotype is subtle or even inapparent in a large proportion of subjects but may occasionally be severe. Leukemia can be the only clinical manifestation of the syndrome.

Data from Orphanet are used to provide information on a disease's name, synonym(s), and overview.

Reference: Access aggregated data from Orphanet at Orphadata.

Orphadata: Free access data from Orphanet. © INSERM 1999. Available on http: // Data version September 2023.

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Advocacy Organizations

Lymphangiomatosis & Gorham’s Disease Alliance

The mission of the LGDA is to bring hope to and improve the quality of life of patients diagnosed with generalized lymphatic anomaly (GLA), kaposiform lymphangiomatosis (KLA), Gorham-Stout disease (GSD) and central conducting lymphatic anomaly (CCLA) through support networks, education, research and advocacy.

RASopathies Network

RASopathies are a group of genetic syndromes that may be as common as 1:1000. The syndromes RASopathies Network focuses on include: cardio-facio-cutaneous (CFC), Costello (CS), LEOPARD/NSML, Neurofibromatosis type 1 (NF1), and Noonan (NS). Our mission is to advance research to improve the quality of life for RASopathy families by bringing together families, clinicians and scientists.

My Faulty Gene

My Faulty Gene is a nonprofit organization which provides information and assistance to any individual whose family medical history suggests genetic testing might be helpful in identifying an increased risk of disease due to a genetic mutation. We believe that everyone in need of genetic testing should have access to it.

My Little Sunshine Foundation

My Little Sunshine is a non-profit foundation dedicated to educating people about the importance of fertility preservation and making fertility resources accessible to all.


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Clinical Trials

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