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  1. Article ; Online: Juvenile xanthogranuloma in Noonan syndrome.

    Ali, Marwan M / Gilliam, Amy E / Ruben, Beth S / Tidyman, William E / Rauen, Katherine A

    American journal of medical genetics. Part A

    2021  Volume 185, Issue 10, Page(s) 3048–3052

    Abstract: Noonan syndrome (NS) is one of the common RASopathies. While the clinical phenotype in NS is variable, it is typically characterized by distinctive craniofacial features, cardiac defects, reduced growth, bleeding disorders, learning issues, and an ... ...

    Abstract Noonan syndrome (NS) is one of the common RASopathies. While the clinical phenotype in NS is variable, it is typically characterized by distinctive craniofacial features, cardiac defects, reduced growth, bleeding disorders, learning issues, and an increased risk of cancer. Several different genes cause NS, all of which are involved in the Ras/mitogen-activated protein kinase (Ras/MAPK) pathway. Juvenile xanthogranuloma (JXG) is an uncommon, proliferative, self-limited cutaneous disorder that affects young individuals and may be overlooked or misdiagnosed due to its transient nature. A RASopathy that is known to be associated with JXG is neurofibromatosis type 1 (NF1). JXG in NF1 has also been reported in association with a juvenile myelomonocytic leukemia (JMML). As RASopathies, both NS and NF1 have an increased incidence of JMML. We report a 10-month-old female with NS who has a PTPN11 pathogenic variant resulting in a heterozygous SHP2 p.Y62D missense mutation. She was found to have numerous, small, yellow-pink smooth papules that were histopathologically confirmed to be JXG. In understanding the common underlying pathogenetic dysregulation of the Ras/MAPK pathway in both NS and NF1, this report suggests a possible molecular association for why NS individuals may be predisposed to JXG.
    MeSH term(s) Female ; Genetic Predisposition to Disease ; Humans ; Infant ; Leukemia, Myelomonocytic, Juvenile/complications ; Leukemia, Myelomonocytic, Juvenile/genetics ; Leukemia, Myelomonocytic, Juvenile/pathology ; Mutation, Missense/genetics ; Neurofibromin 1/genetics ; Noonan Syndrome/complications ; Noonan Syndrome/genetics ; Noonan Syndrome/pathology ; Phenotype ; Protein Tyrosine Phosphatase, Non-Receptor Type 11/genetics ; Xanthogranuloma, Juvenile/complications ; Xanthogranuloma, Juvenile/genetics ; Xanthogranuloma, Juvenile/pathology ; ras Proteins/genetics
    Chemical Substances NF1 protein, human ; Neurofibromin 1 ; PTPN11 protein, human (EC 3.1.3.48) ; Protein Tyrosine Phosphatase, Non-Receptor Type 11 (EC 3.1.3.48) ; ras Proteins (EC 3.6.5.2)
    Language English
    Publishing date 2021-05-25
    Publishing country United States
    Document type Case Reports ; Research Support, N.I.H., Extramural
    ZDB-ID 2108614-X
    ISSN 1552-4833 ; 0148-7299 ; 1552-4825
    ISSN (online) 1552-4833
    ISSN 0148-7299 ; 1552-4825
    DOI 10.1002/ajmg.a.62353
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  2. Article ; Online: Familial cardio-facio-cutaneous syndrome: Vertical transmission of the BRAF p.G464R pathogenic variant and review of the literature.

    Rauen, Katherine A / Maeda, Yoshiko / Egense, Alena / Tidyman, William E

    American journal of medical genetics. Part A

    2020  Volume 185, Issue 2, Page(s) 469–475

    Abstract: Cardio-facio-cutaneous syndrome (CFC) is one of the RASopathies and is caused by germline mutations that activate the Ras/mitogen-activated protein kinase (MAPK) pathway. CFC is due to heterozygous germline mutations in protein kinases BRAF, MEK1, or ... ...

    Abstract Cardio-facio-cutaneous syndrome (CFC) is one of the RASopathies and is caused by germline mutations that activate the Ras/mitogen-activated protein kinase (MAPK) pathway. CFC is due to heterozygous germline mutations in protein kinases BRAF, MEK1, or MEK2 and rarely in KRAS, a small GTPase. CFC is a multiple congenital anomaly disorder in which individuals may have craniofacial dysmorphia, heart issues, skin and hair anomalies, and delayed development. Pathogenic variants for CFC syndrome are usually considered de novo because vertical transmission has only been reported with MEK2 and KRAS. The index case was a 3-year-old male with features consistent with the clinical diagnosis of CFC. Sequencing revealed a previously reported heterozygous likely pathogenic variant BRAF p.G464R. Upon detailed family history, the index case's pregnant mother was noted to have similar features to her son. Targeted familial testing of the BRAF pathogenic variant was performed on the mother, confirming her diagnosis. Prenatal genetic testing for the fetus was declined, but postnatal molecular testing of the index case's sister was positive for the familial BRAF p.G464R variant. Functional analysis of the variant demonstrated increased kinase activity. We report the first identified vertically transmitted functional BRAF pathogenic variant. Our findings emphasize the importance of obtaining a comprehensive evaluation of family members and that activating pathogenic variants within the canonical MAPK cascade mediated by BRAF are compatible with human reproduction.
    MeSH term(s) Abnormalities, Multiple/genetics ; Abnormalities, Multiple/pathology ; Adult ; Child, Preschool ; Ectodermal Dysplasia/genetics ; Ectodermal Dysplasia/pathology ; Facies ; Failure to Thrive/genetics ; Failure to Thrive/pathology ; Female ; Genetic Predisposition to Disease ; Germ-Line Mutation/genetics ; Heart Defects, Congenital/genetics ; Heart Defects, Congenital/pathology ; Humans ; MAP Kinase Kinase 1/genetics ; MAP Kinase Kinase 2/genetics ; Male ; Pregnancy ; Proto-Oncogene Proteins B-raf/genetics ; Proto-Oncogene Proteins p21(ras)/genetics
    Chemical Substances KRAS protein, human ; MAP2K2 protein, human (EC 2.7.1.-) ; BRAF protein, human (EC 2.7.11.1) ; Proto-Oncogene Proteins B-raf (EC 2.7.11.1) ; MAP Kinase Kinase 1 (EC 2.7.12.2) ; MAP Kinase Kinase 2 (EC 2.7.12.2) ; MAP2K1 protein, human (EC 2.7.12.2) ; Proto-Oncogene Proteins p21(ras) (EC 3.6.5.2)
    Language English
    Publishing date 2020-12-04
    Publishing country United States
    Document type Journal Article ; Research Support, N.I.H., Extramural
    ZDB-ID 2108614-X
    ISSN 1552-4833 ; 0148-7299 ; 1552-4825
    ISSN (online) 1552-4833
    ISSN 0148-7299 ; 1552-4825
    DOI 10.1002/ajmg.a.61995
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  3. Article: Expansion of the RASopathies.

    Tidyman, William E / Rauen, Katherine A

    Current genetic medicine reports

    2016  Volume 4, Issue 3, Page(s) 57–64

    Abstract: The Ras/mitogen activated protein kinase (MAPK) pathway is essential in the regulation of cell cycle, differentiation, growth, cell senescence and apoptosis, all of which are critical to normal development. A class of neurodevelopmental disorders, ... ...

    Abstract The Ras/mitogen activated protein kinase (MAPK) pathway is essential in the regulation of cell cycle, differentiation, growth, cell senescence and apoptosis, all of which are critical to normal development. A class of neurodevelopmental disorders, RASopathies, is caused by germline mutations in genes of the Ras/MAPK pathway. Through the use of whole exome sequencing and targeted sequencing of selected genes in cohorts of panel-negative RASopathy patients, several new genes have been identified. These include:
    Language English
    Publishing date 2016-07-01
    Publishing country United States
    Document type Journal Article
    ISSN 2167-4876
    ISSN 2167-4876
    DOI 10.1007/s40142-016-0100-7
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  4. Article ; Online: Pathogenetics of the RASopathies.

    Tidyman, William E / Rauen, Katherine A

    Human molecular genetics

    2016  Volume 25, Issue R2, Page(s) R123–R132

    Abstract: The RASopathies are defined as a group of medical genetics syndromes that are caused by germ-line mutations in genes that encode components or regulators of the Ras/mitogen-activated protein kinase (MAPK) pathway. Taken together, the RASopathies ... ...

    Abstract The RASopathies are defined as a group of medical genetics syndromes that are caused by germ-line mutations in genes that encode components or regulators of the Ras/mitogen-activated protein kinase (MAPK) pathway. Taken together, the RASopathies represent one of the most prevalent groups of malformation syndromes affecting greater than 1 in 1,000 individuals. The Ras/MAPK pathway has been well studied in the context of cancer as it plays essential roles in growth, differentiation, cell cycle, senescence and apoptosis, all of which are also critical to normal development. The consequence of germ-line dysregulation leads to phenotypic alterations of development. RASopathies can be caused by several pathogenetic mechanisms that ultimately impact or alter the normal function and regulation of the MAPK pathway. These pathogenetic mechanisms can include functional alteration of GTPases, Ras GTPase-activating proteins, Ras guanine exchange factors, kinases, scaffolding or adaptor proteins, ubiquitin ligases, phosphatases and pathway inhibitors. Although these mechanisms are diverse, the common underlying biochemical phenotype shared by all the RASopathies is Ras/MAPK pathway activation. This results in the overlapping phenotypic features among these syndromes.
    Language English
    Publishing date 2016-07-12
    Publishing country England
    Document type Journal Article
    ZDB-ID 1108742-0
    ISSN 1460-2083 ; 0964-6906
    ISSN (online) 1460-2083
    ISSN 0964-6906
    DOI 10.1093/hmg/ddw191
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  5. Article ; Online: MEK-inhibitor-mediated rescue of skeletal myopathy caused by activating Hras mutation in a Costello syndrome mouse model.

    Tidyman, William E / Goodwin, Alice F / Maeda, Yoshiko / Klein, Ophir D / Rauen, Katherine A

    Disease models & mechanisms

    2021  Volume 15, Issue 2

    Abstract: Costello syndrome (CS) is a congenital disorder caused by heterozygous activating germline HRAS mutations in the canonical Ras/mitogen-activated protein kinase (Ras/MAPK) pathway. CS is one of the RASopathies, a large group of syndromes caused by ... ...

    Abstract Costello syndrome (CS) is a congenital disorder caused by heterozygous activating germline HRAS mutations in the canonical Ras/mitogen-activated protein kinase (Ras/MAPK) pathway. CS is one of the RASopathies, a large group of syndromes caused by mutations within various components of the Ras/MAPK pathway. An important part of the phenotype that greatly impacts quality of life is hypotonia. To gain a better understanding of the mechanisms underlying hypotonia in CS, a mouse model with an activating HrasG12V allele was utilized. We identified a skeletal myopathy that was due, in part, to inhibition of embryonic myogenesis and myofiber formation, resulting in a reduction in myofiber size and number that led to reduced muscle mass and strength. In addition to hyperactivation of the Ras/MAPK and PI3K/AKT pathways, there was a significant reduction in p38 signaling, as well as global transcriptional alterations consistent with the myopathic phenotype. Inhibition of Ras/MAPK pathway signaling using a MEK inhibitor rescued the HrasG12V myopathy phenotype both in vitro and in vivo, demonstrating that increased MAPK signaling is the main cause of the muscle phenotype in CS.
    MeSH term(s) Animals ; Costello Syndrome/genetics ; Costello Syndrome/metabolism ; Mice ; Mitogen-Activated Protein Kinase Kinases/genetics ; Mitogen-Activated Protein Kinase Kinases/metabolism ; Muscular Diseases ; Mutation/genetics ; Phosphatidylinositol 3-Kinases/metabolism ; Proto-Oncogene Proteins p21(ras)/genetics ; Proto-Oncogene Proteins p21(ras)/metabolism ; Quality of Life
    Chemical Substances Mitogen-Activated Protein Kinase Kinases (EC 2.7.12.2) ; Hras protein, mouse (EC 3.6.5.2) ; Proto-Oncogene Proteins p21(ras) (EC 3.6.5.2)
    Language English
    Publishing date 2021-11-19
    Publishing country England
    Document type Journal Article ; Research Support, N.I.H., Extramural
    ZDB-ID 2451104-3
    ISSN 1754-8411 ; 1754-8403
    ISSN (online) 1754-8411
    ISSN 1754-8403
    DOI 10.1242/dmm.049166
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  6. Article ; Online: Ras/MAPK dysregulation in development causes a skeletal myopathy in an activating Braf

    Maeda, Yoshiko / Tidyman, William E / Ander, Bradley P / Pritchard, Catrin A / Rauen, Katherine A

    Developmental dynamics : an official publication of the American Association of Anatomists

    2021  Volume 250, Issue 8, Page(s) 1074–1095

    Abstract: Background: Cardio-facio-cutaneous (CFC) syndrome is a human multiple congenital anomaly syndrome that is caused by activating heterozygous mutations in either BRAF, MEK1, or MEK2, three protein kinases of the Ras/mitogen-activated protein kinase (MAPK) ...

    Abstract Background: Cardio-facio-cutaneous (CFC) syndrome is a human multiple congenital anomaly syndrome that is caused by activating heterozygous mutations in either BRAF, MEK1, or MEK2, three protein kinases of the Ras/mitogen-activated protein kinase (MAPK) pathway. CFC belongs to a group of syndromes known as RASopathies. Skeletal muscle hypotonia is a ubiquitous phenotype of RASopathies, especially in CFC syndrome. To better understand the underlying mechanisms for the skeletal myopathy in CFC, a mouse model with an activating Braf
    Results: The activating Braf
    Conclusions: A skeletal myopathy was identified in the CFC Braf
    MeSH term(s) Alleles ; Animals ; Ectodermal Dysplasia/genetics ; Ectodermal Dysplasia/metabolism ; Ectodermal Dysplasia/pathology ; Facies ; Failure to Thrive/genetics ; Failure to Thrive/metabolism ; Failure to Thrive/pathology ; Heart Defects, Congenital/genetics ; Heart Defects, Congenital/metabolism ; Heart Defects, Congenital/pathology ; Mice ; Mitogen-Activated Protein Kinases/genetics ; Mitogen-Activated Protein Kinases/metabolism ; Muscle, Skeletal/metabolism ; Muscle, Skeletal/pathology ; Muscular Diseases/genetics ; Muscular Diseases/metabolism ; Muscular Diseases/pathology ; Phenotype ; Proto-Oncogene Proteins B-raf/genetics ; Proto-Oncogene Proteins B-raf/metabolism
    Chemical Substances Braf protein, mouse (EC 2.7.11.1) ; Proto-Oncogene Proteins B-raf (EC 2.7.11.1) ; Mitogen-Activated Protein Kinases (EC 2.7.11.24)
    Language English
    Publishing date 2021-02-13
    Publishing country United States
    Document type Journal Article ; Research Support, N.I.H., Extramural ; Research Support, Non-U.S. Gov't
    ZDB-ID 1102541-4
    ISSN 1097-0177 ; 1058-8388
    ISSN (online) 1097-0177
    ISSN 1058-8388
    DOI 10.1002/dvdy.309
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  7. Article ; Online: MEK-inhibitor-mediated rescue of skeletal myopathy caused by activating Hras mutation in a Costello syndrome mouse model

    William E. Tidyman / Alice F. Goodwin / Yoshiko Maeda / Ophir D. Klein / Katherine A. Rauen

    Disease Models & Mechanisms, Vol 15, Iss

    2022  Volume 2

    Abstract: Costello syndrome (CS) is a congenital disorder caused by heterozygous activating germline HRAS mutations in the canonical Ras/mitogen-activated protein kinase (Ras/MAPK) pathway. CS is one of the RASopathies, a large group of syndromes caused by ... ...

    Abstract Costello syndrome (CS) is a congenital disorder caused by heterozygous activating germline HRAS mutations in the canonical Ras/mitogen-activated protein kinase (Ras/MAPK) pathway. CS is one of the RASopathies, a large group of syndromes caused by mutations within various components of the Ras/MAPK pathway. An important part of the phenotype that greatly impacts quality of life is hypotonia. To gain a better understanding of the mechanisms underlying hypotonia in CS, a mouse model with an activating HrasG12V allele was utilized. We identified a skeletal myopathy that was due, in part, to inhibition of embryonic myogenesis and myofiber formation, resulting in a reduction in myofiber size and number that led to reduced muscle mass and strength. In addition to hyperactivation of the Ras/MAPK and PI3K/AKT pathways, there was a significant reduction in p38 signaling, as well as global transcriptional alterations consistent with the myopathic phenotype. Inhibition of Ras/MAPK pathway signaling using a MEK inhibitor rescued the HrasG12V myopathy phenotype both in vitro and in vivo, demonstrating that increased MAPK signaling is the main cause of the muscle phenotype in CS.
    Keywords costello syndrome ; hypotonia ; mek inhibitor ; myogenesis ; rasopathies ; ras/mapk ; Medicine ; R ; Pathology ; RB1-214
    Subject code 570
    Language English
    Publishing date 2022-02-01T00:00:00Z
    Publisher The Company of Biologists
    Document type Article ; Online
    Database BASE - Bielefeld Academic Search Engine (life sciences selection)

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  8. Article ; Online: Mutational and functional analysis in human Ras/MAP kinase genetic syndromes.

    Tidyman, William E / Rauen, Katherine A

    Methods in molecular biology (Clifton, N.J.)

    2010  Volume 661, Page(s) 433–447

    Abstract: The Ras/mitogen-activated protein kinase (MAPK) pathway is essential in regulation of the cell cycle, cell differentiation, growth, and cell senescence, each of which are critical to normal development. A class of developmental disorders, the " ... ...

    Abstract The Ras/mitogen-activated protein kinase (MAPK) pathway is essential in regulation of the cell cycle, cell differentiation, growth, and cell senescence, each of which are critical to normal development. A class of developmental disorders, the "RASopathies," is caused by germline mutations in genes that encode protein components of the Ras/MAPK pathway which result in dysregulation of the pathway and profound deleterious effects on development. One of these syndromes, cardiofaciocutaneous (CFC) syndrome, is caused by germline mutations in BRAF, MAP2K1 (MEK1) and MAP2K2 (MEK2), and possibly KRAS genes. Here, we describe the laboratory protocols and methods that we used to identify mutations in BRAF and MEK1/2 genes as causative for CFC syndrome. In addition, we present the techniques used to determine the effect these mutations have on activity of the Ras/MAPK pathway through Western blot analysis of the phosphorylation of endogenous ERK1/2, as well as through the use of an in vitro kinase assay that measures the phosphorylation of Elk-1.
    MeSH term(s) Base Sequence ; Blotting, Western ; Cloning, Molecular ; DNA/genetics ; DNA/isolation & purification ; DNA Mutational Analysis/methods ; DNA, Complementary/genetics ; Ectodermal Dysplasia/enzymology ; Ectodermal Dysplasia/genetics ; Ectodermal Dysplasia/metabolism ; Enzyme Assays/methods ; Facies ; Failure to Thrive/enzymology ; Failure to Thrive/genetics ; Failure to Thrive/metabolism ; Genome/genetics ; HEK293 Cells ; Heart Defects, Congenital/enzymology ; Heart Defects, Congenital/genetics ; Heart Defects, Congenital/metabolism ; Humans ; MAP Kinase Kinase 1/genetics ; MAP Kinase Kinase 1/metabolism ; MAP Kinase Kinase 2/genetics ; MAP Kinase Kinase 2/metabolism ; MAP Kinase Signaling System ; Point Mutation ; Protein-Serine-Threonine Kinases/genetics ; Protein-Serine-Threonine Kinases/metabolism ; Proto-Oncogene Proteins B-raf/genetics ; Proto-Oncogene Proteins B-raf/metabolism ; Syndrome ; Transfection
    Chemical Substances DNA, Complementary ; DNA (9007-49-2) ; Protein-Serine-Threonine Kinases (EC 2.7.11.1) ; Proto-Oncogene Proteins B-raf (EC 2.7.11.1) ; MAP Kinase Kinase 1 (EC 2.7.12.2) ; MAP Kinase Kinase 2 (EC 2.7.12.2)
    Language English
    Publishing date 2010
    Publishing country United States
    Document type Journal Article
    ISSN 1940-6029
    ISSN (online) 1940-6029
    DOI 10.1007/978-1-60761-795-2_27
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  9. Article ; Online: The RASopathies: developmental syndromes of Ras/MAPK pathway dysregulation.

    Tidyman, William E / Rauen, Katherine A

    Current opinion in genetics & development

    2009  Volume 19, Issue 3, Page(s) 230–236

    Abstract: The Ras/mitogen activated protein kinase (MAPK) pathway is essential in the regulation of the cell cycle, differentiation, growth and cell senescence, all of which are critical to normal development. It is therefore not surprising that its dysregulation ... ...

    Abstract The Ras/mitogen activated protein kinase (MAPK) pathway is essential in the regulation of the cell cycle, differentiation, growth and cell senescence, all of which are critical to normal development. It is therefore not surprising that its dysregulation has profound effects on development. A class of developmental syndromes, the 'RASopathies', is caused by germline mutations in genes that encode protein components of the Ras/MAPK pathway. The vast majority of these mutations result in increased signal transduction down the Ras/MAPK pathway, but usually to a lesser extent than somatic mutations associated with oncogenesis. Each syndrome exhibits unique phenotypic features, however, since they all cause dysregulation of the Ras/MAPK pathway, there are numerous overlapping phenotypic features between the syndromes, including characteristic facial features, cardiac defects, cutaneous abnormalities, neurocognitive delay and a predisposition to malignancies. Here we review the clinical and underlying molecular basis for each of these syndromes.
    MeSH term(s) Animals ; Germ-Line Mutation ; Humans ; Mitogen-Activated Protein Kinases/genetics ; Mitogen-Activated Protein Kinases/metabolism ; Models, Biological ; Noonan Syndrome/genetics ; Noonan Syndrome/pathology ; Noonan Syndrome/physiopathology ; SOS1 Protein/genetics ; SOS1 Protein/metabolism ; Signal Transduction/genetics ; Signal Transduction/physiology ; Syndrome ; ras Proteins/genetics ; ras Proteins/metabolism
    Chemical Substances SOS1 Protein ; Mitogen-Activated Protein Kinases (EC 2.7.11.24) ; ras Proteins (EC 3.6.5.2)
    Language English
    Publishing date 2009-05-19
    Publishing country England
    Document type Journal Article ; Research Support, N.I.H., Extramural ; Review
    ZDB-ID 1077312-5
    ISSN 1879-0380 ; 0959-437X
    ISSN (online) 1879-0380
    ISSN 0959-437X
    DOI 10.1016/j.gde.2009.04.001
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  10. Article ; Online: Noonan, Costello and cardio-facio-cutaneous syndromes: dysregulation of the Ras-MAPK pathway.

    Tidyman, William E / Rauen, Katherine A

    Expert reviews in molecular medicine

    2008  Volume 10, Page(s) e37

    Abstract: A class of developmental disorders caused by dysregulation of the Ras-induced mitogen-activated protein kinase (MAPK) cascade (the Ras-MAPK pathway) has emerged. Three of these disorders - Noonan, Costello and cardio-facio-cutaneous syndromes - have ... ...

    Abstract A class of developmental disorders caused by dysregulation of the Ras-induced mitogen-activated protein kinase (MAPK) cascade (the Ras-MAPK pathway) has emerged. Three of these disorders - Noonan, Costello and cardio-facio-cutaneous syndromes - have overlapping phenotypic features characterised by distinctive facial dysmorphia, cardiac defects, musculoskeletal and cutaneous abnormalities, and neurocognitive delay. The germline mutations associated with these disorders are in genes that encode proteins of the Ras-MAPK pathway. In vitro studies have determined that the overwhelming majority of these mutations result in increased signal transduction down the pathway, but usually to a lesser degree than somatic mutations in the same genes that are associated with cancer. The Ras-MAPK pathway is essential in the regulation of the cell cycle, differentiation, growth and senescence, so it is not surprising that germline mutations that affect its function have profound effects on development. Here we review the clinical consequences of the known molecular lesions associated with Noonan syndrome, Costello syndrome and cardio-facio-cutaneous syndrome, and explore possible therapeutic modalities for treatment.
    MeSH term(s) Abnormalities, Multiple/genetics ; Abnormalities, Multiple/metabolism ; Abnormalities, Multiple/pathology ; Animals ; Craniofacial Abnormalities/genetics ; Craniofacial Abnormalities/metabolism ; Genes, ras ; Heart Defects, Congenital/genetics ; Heart Defects, Congenital/metabolism ; Humans ; LEOPARD Syndrome/genetics ; MAP Kinase Signaling System ; Mitogen-Activated Protein Kinases/genetics ; Mitogen-Activated Protein Kinases/metabolism ; Mutation ; Noonan Syndrome/genetics ; Noonan Syndrome/metabolism ; Noonan Syndrome/pathology ; Protein Tyrosine Phosphatase, Non-Receptor Type 11/genetics ; Protein Tyrosine Phosphatase, Non-Receptor Type 11/metabolism ; Proto-Oncogene Proteins/genetics ; Proto-Oncogene Proteins/metabolism ; Proto-Oncogene Proteins B-raf/genetics ; Proto-Oncogene Proteins B-raf/metabolism ; Proto-Oncogene Proteins c-raf/genetics ; Proto-Oncogene Proteins c-raf/metabolism ; Proto-Oncogene Proteins p21(ras)/genetics ; Proto-Oncogene Proteins p21(ras)/metabolism ; SOS1 Protein/genetics ; SOS1 Protein/metabolism ; Syndrome ; ras Proteins/genetics ; ras Proteins/metabolism
    Chemical Substances KRAS protein, human ; Proto-Oncogene Proteins ; SOS1 Protein ; BRAF protein, human (EC 2.7.11.1) ; Proto-Oncogene Proteins B-raf (EC 2.7.11.1) ; Proto-Oncogene Proteins c-raf (EC 2.7.11.1) ; Mitogen-Activated Protein Kinases (EC 2.7.11.24) ; PTPN11 protein, human (EC 3.1.3.48) ; Protein Tyrosine Phosphatase, Non-Receptor Type 11 (EC 3.1.3.48) ; HRAS protein, human (EC 3.6.5.2) ; Proto-Oncogene Proteins p21(ras) (EC 3.6.5.2) ; ras Proteins (EC 3.6.5.2)
    Language English
    Publishing date 2008-12-09
    Publishing country England
    Document type Journal Article ; Research Support, N.I.H., Extramural ; Review
    ISSN 1462-3994
    ISSN (online) 1462-3994
    DOI 10.1017/S1462399408000902
    Database MEDical Literature Analysis and Retrieval System OnLINE

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