Abstract: The present invention relates to a peptide having the sequence from N-terminus to C-terminus X-2X-1ZX1X2X3X4X5 wherein Z is tyrosine, phosphotyrosine or a non-natural analogue of phosphotyrosine, such as phosphonodifluoromethyl phenylalanine (F2Pmp) X-2 is a hydrophobic amino acid, such as Leu, Ile, Val, Phe, Tyr, Trp and Met X-1 is any amino acid X1 is a hydrophobic amino acid, such as Ile, Leu, Val, Phe, Tyr, Trp and Met X3 is a hydrophobic amino acid, such as Leu, Ile, Val, Phe, Tyr, Trp and Met X5 is a hydrophobic amino acid, such as Trp, Ile, Val, Phe, Tyr, and Met X2 and X4 are anionic amino acids, preferably each independently is Asp or Glu. The peptide inhibits protein-protein interactions of the Src homology 2 domain-containing phosphatase 2 (SHP2), for the treatment of cancer and RASopathies and as a biomedical research tool.

Abstract: Diagnostic and therapeutic applications for Noonan Syndrome are described. The diagnostic and therapeutic applications are based on certain mutations in a RAS-specific guanine nucleotide exchange factor gene SOS1 or its expression product. The diagnostic and therapeutic applications are also based on certain mutations in a serine/threonine protein kinase gene RAFl or its expression product thereof. Also described are nucleotide sequences, amino acid sequences, probes, and primers related to RAF1 or SOS1, and variants thereof, as well as host cells expressing such variants.

Abstract: The present invention is directed to methods of diagnosing Noonan-like syndrome with loose anagen hair comprising detecting a mutation in SHOC2 gene. One specific diagnostic mutation disclosed is an A-to-G transition at position 4 resulting in a mutation at position 2 of SHOC2 amino acid sequence from serine to glycine. The invention also provides related sequences and kits.

Abstract: Diagnostic and therapeutic applications for Noonan Syndrome are described. The diagnostic and therapeutic applications are based on certain mutations in a RAS-specific guanine nucleotide exchange factor gene SOS1 or its expression product. The diagnostic and therapeutic applications are also based on certain mutations in a serine/threonine protein kinase gen RAF1 or its expression product thereof. Also described are nucleotide sequences, amino acid sequences, probes, and primers related to RAF1 or SOS1, and variants thereof, as well as host cells expressing such variants.

Abstract: Diagnostic and therapeutic applications for Noonan Syndrome are described. The diagnostic and therapeutic applications are based on certain mutations in a RAS-specific guanine nucleotide exchange factor gene SOS1 or its expression product. The diagnostic and therapeutic applications are also based on certain mutations in a serine/threonine protein kinase gene RAF1 or its expression product thereof. Also described are nucleotide sequences, amino acid sequences, probes, and primers related to RAF1 or SOS1, and variants thereof, as well as host cells expressing such variants.

Abstract: The present invention is directed to methods of diagnosing Noonan-like syndrome with loose anagen hair comprising detecting a mutation in SHOC2 gene. One specific diagnostic mutation disclosed is an A-to-G transition at position 4 resulting in a mutation at position 2 of SHOC2 amino acid sequence from serine to glycine. The invention also provides related sequences and kits.

Abstract: Diagnostic and therapeutic applications for Noonan Syndrome are described. The diagnostic and therapeutic applications are based on certain mutations in a RAS-specific guanine nucleotide exchange factor gene SOS1 or its expression product. The diagnostic and therapeutic applications are also based on certain mutations in a serine/threonine protein kinase gene RAF1 or its expression product thereof. Also described are nucleotide sequences, amino acid sequences, probes, and primers related to RAF1 or SOS1, and variants thereof, as well as host cells expressing such variants.

Abstract: Diagnostic and therapeutic applications for certain types of cancer and precancerous conditions, including those deriving from hematologic cells, are described. Of particular interest are those cancers and precancerous conditions associated with increased signaling in the RAS-MAP kinase pathway. The diagnostic and therapeutic applications described herein are based on certain mutations in the protein tyrosine phosphatase gene PTPN11 and its expression product, PTPN11, promoting a gain-of-function in PTPN11 activity. Also described are nucleotide sequences, amino acid sequences, probes, and primers related to PTPN11 and PTPN11 variants, and cells expressing such variants.

Abstract: Diagnostic and therapeutic applications for Noonan Syndrome are described. The diagnostic and therapeutic applications are based on certain mutations in the protein tyrosine phosphatase gene PTPN11 and its expression product, PTPN11, as well as mutations in other components in a PTPN11 signal transduction pathway promoting an increased signaling flux. Also described are nucleotide sequences, amino acid sequences, probes, and primers related to PTPN11 and PTPN11 variants, and cells expressing such variants.

Abstract: Diagnostic and therapeutic applications for certain types of cancer and precancerous conditions, including those deriving from hematologic cells, are described. Of particular interest are those cancers and precancerous conditions associated with increased signaling in the RAS-MAP kinase pathway. The diagnostic and therapeutic applications described herein are based on certain mutations in the protein tyrosine phosphatase gene PTPN11 and its expression product, PTPN11, promoting a gain-of-function in PTPN11 activity. Also described are nucleotide sequences, amino acid sequences, probes, and primers related to PTPN11 and PTPN11 variants, and cells expressing such variants.

Abstract: Diagnostic and therapeutic applications for Noonan Syndrome are described. The diagnostic and therapeutic applications are based on certain mutations in the protein tyrosine phosphatase gene PTPN11 and its expression product, PTPN11, as well as mutations in other components in a PTPN11 signal transduction pathway promoting an increased signaling flux. Also described are nucleotide sequences, amino acid sequences, probes, and primers related to PTPN11 and PTPN11 variants, and cells expressing such variants.