Noonan syndrome (NS) is an autosomal dominant disorder characterised by short stature, craniofacial dysmorphism, congenital cardiac defects, cryptorchidism in men, coagulation defects, and neurocognitive delay. In addition, individuals with NS have an increased risk of developing cancer. NS is caused by germline mutations in genes that encode components or regulators of the Ras/MAPK pathway. Heterozygous, pathogenic variants in 9 known genes account for approximately 80% of cases. The most common gene associated with NS is PTPN11, which accounts for approximately 50% of all cases.
Tartaglia M, Mehler EL, Goldberg R, Zampino G, Brunner HG, Kremer H, van der Burgt I, Crosby AH, Ion A, Jeffery S, Kalidas K, Patton MA, Kucherlapati RS, Gelb BD
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Mutations in PTPN11, encoding the protein tyrosine phosphatase SHP-2, cause Noonan syndrome.
Schubbert S, Zenker M, Rowe SL, Boll S, Klein C, Bollag G, van der Burgt I, Musante L, Kalscheuer V, Wehner LE, Nguyen H, West B, Zhang KY, Sistermans E, Rauch A, Niemeyer CM, Shannon K, Kratz CP
Yamamoto GL, Aguena M, Gos M, Hung C, Pilch J, Fahiminiya S, Abramowicz A, Cristian I, Buscarilli M, Naslavsky MS, Malaquias AC, Zatz M, Bodamer O, Majewski J, Jorge AA, Pereira AC, Kim CA, Passos-Bueno MR, Bertola DR
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Rare variants in SOS2 and LZTR1 are associated with Noonan syndrome.
Motta M, Pannone L, Pantaleoni F, Bocchinfuso G, Radio FC, Cecchetti S, Ciolfi A, Di Rocco M, Elting MW, Brilstra EH, Boni S, Mazzanti L, Tamburrino F, Walsh L, Payne K, Fernandez-Jaen A, Ganapathi M, Chung WK, Grange DK, Dave-Wala A, Reshmi SC, Bartholomew DW, Mouhlas D, Carpentieri G, Bruselles A, Pizzi S, Bellacchio E, Piceci-Sparascio F, Lissewski C, Brinkmann J, Waclaw RR, Waisfisz Q, van Gassen K, Wentzensen IM, Morrow MM, Alvarez S, Martinez-Garcia M, De Luca A, Memo L, Zampino G, Rossi C, Seri M, Gelb BD, Zenker M, Dallapiccola B, Stella L, Prada CE, Martinelli S, Flex E, Tartaglia M
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Enhanced MAPK1 Function Causes a Neurodevelopmental Disorder within the RASopathy Clinical Spectrum.
Motta M, Fasano G, Gredy S, Brinkmann J, Bonnard AA, Simsek-Kiper PO, Gulec EY, Essaddam L, Utine GE, Guarnetti Prandi I, Venditti M, Pantaleoni F, Radio FC, Ciolfi A, Petrini S, Consoli F, Vignal C, Hepbasli D, Ullrich M, de Boer E, Vissers LELM, Gritli S, Rossi C, De Luca A, Ben Becher S, Gelb BD, Dallapiccola B, Lauri A, Chillemi G, Schuh K, Cave H, Zenker M, Tartaglia M
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SPRED2 loss-of-function causes a recessive Noonan syndrome-like phenotype.