Results 21 to 30 of about 149 (148)

UBE3A Dosage Imbalance as a Molecular Framework Linking Angelman Syndrome and Dup15q‐Associated Autism Phenotypes

American Journal of Medical Genetics Part B: Neuropsychiatric Genetics, EarlyView.
ABSTRACT UBE3A is a dosage‐sensitive HECT E3 ubiquitin ligase whose neuronal expression is shaped by genomic imprinting at the 15q11.2‐q13 locus. Opposite directions of UBE3A dosage imbalance contribute to distinct neurodevelopmental phenotypes: loss of maternal UBE3A underlies Angelman syndrome, whereas maternally derived 15q11.2‐q13 copy‐number gains,
Ruslan Kurmashev
wiley   +1 more source

The Diagnosis That Arrived Decades Late: Living Without and Then With Myhre Syndrome

American Journal of Medical Genetics Part C: Seminars in Medical Genetics, EarlyView.
ABSTRACT Myhre syndrome (MIM #139210) is a rare multisystem disorder first described in 1981, characterized by short stature, neurodevelopmental delay, joint contractures, and cardiopulmonary complications. Its molecular basis, recurrent pathogenic variants in SMAD4, was not discovered until 2011. This narrative is based on a review of medical records,
Abdallah F. Elias
wiley   +1 more source

Descriptive Epidemiology From the Myhre Syndrome Foundation Registry: The Value of Self‐Reported Data

American Journal of Medical Genetics Part C: Seminars in Medical Genetics, EarlyView.
ABSTRACT Myhre syndrome is an ultrarare genetic disease characterized by short stature, distinct craniofacial features, cardiovascular and respiratory fibrosis and stenosis, neurodevelopmental delays, autism, intellectual disability, and hearing loss. The natural history of Myhre syndrome is still not fully understood due to a small patient population ...
Mary K. Young, Armelle Pindon, Maggie R. Brand, Kate Wears, Katherine H. Young, Alyssa Mendel, Michael J. Lyons   +6 more
wiley   +1 more source

Milestone Attainment in Young Children With Arthrogryposis Multiplex Congenita: Developmental Profile and Associated Factors

American Journal of Medical Genetics Part C: Seminars in Medical Genetics, EarlyView.
ABSTRACT Evidence on developmental milestones in children with arthrogryposis multiplex congenita (AMC) under the age of five is scarce. This multisite cross‐sectional study described developmental status and examined factors associated with milestone attainment in 143 children aged 0–66 months from a pediatric AMC Registry.
Ahlam Zidan, Sophia C. Pasia, Emmanouil Rampakakis, Reggie Hamdy, Frank Rauch, Lauren C. Hyer, Joel Lerman, Haluk Altiok, Krister Freese, Cary Mielke, Sarah B. Nossov, Philip F. Giampietro, Thania Ordaz‐Robles, Noémi Dahan‐Oliel   +13 more
wiley   +1 more source

Spectrum of Congenital Anomalies in Myhre Syndrome—Insights Into Effects Brought by Altered TGF‐β Signaling via Gain‐of‐Function Variants in SMAD4

American Journal of Medical Genetics Part C: Seminars in Medical Genetics, EarlyView.
ABSTRACT Myhre syndrome is a rare genetic disorder characterized by progressive multisystem involvement. Gain‐of‐function missense heterozygous variants affecting the Ile500 residue and Arg496 residue of the SMAD4 gene are implicated in this condition.
Kawmadi Gunawardena, Alessandro De Falco, Deborah Osio, Eleanor Sherlock, Emma Kivuva, Erina Sasaki, Francis H. Sansbury, Nayana Lahiri, Patricia Foley, Sahar Mansour, Shane McKee, Tazeen Ashraf, Nicola Brunetti‐Pierri, Usha Kini   +13 more
wiley   +1 more source

Therapy for Myhre Syndrome: Goals, Misconceptions, and Current Agents

American Journal of Medical Genetics Part C: Seminars in Medical Genetics, EarlyView.
ABSTRACT Myhre Syndrome (MYHRS, MIM #139210) is a rare, multisystem connective tissue disorder caused by recurrent heterozygous gain‐of‐function pathogenic variants in the SMAD4 gene, a key player in TGF‐β signaling and a regulator of extracellular matrix homeostasis.
Alessandro De Falco, Alfonso Manuel D'Alessio, Nicola Brunetti‐Pierri   +2 more
wiley   +1 more source

Spinal Involvement in a Pediatric and Adult Cohort of Patients With Arthrogryposis Multiplex Congenita

American Journal of Medical Genetics Part C: Seminars in Medical Genetics, EarlyView.
ABSTRACT This was a single‐center retrospective observational study with national recruitment from October 2007 to March 2022 at the AMC clinic of the University Hospital Grenoble Alpes (CHUGA). Participants underwent a clinical spinal assessment and spine radiography.
Alicia Mom, Véronique Bourg, Shenhao Dai, Alicia‐Marine Milot, Dominic Perennou, Klaus Dieterich   +5 more
wiley   +1 more source

Review of the Molecular and Developmental Basis of Myhre Syndrome, Bench Research

American Journal of Medical Genetics Part C: Seminars in Medical Genetics, EarlyView.
ABSTRACT Myhre syndrome (MS) is a connective‐tissue disorder within the acromelic dysplasia spectrum. It is characterized by congenital craniofacial, skeletal, cutaneous anomalies, respiratory, cardiovascular along with intellectual disability, deafness, and progressive fibrosis.
Camille Viaut, Valerie Cormier‐Daire
wiley   +1 more source

A Novel Splice Variant in ERGIC1 Causes Arthrogryposis Multiplex Congenita—Characterization Using Urine‐Derived Cells

American Journal of Medical Genetics Part C: Seminars in Medical Genetics, EarlyView.
ABSTRACT Arthrogryposis multiplex congenita (AMC) is defined as the presence of joint contractures affecting at least two body regions at birth. Three different ERGIC1 variants have been reported in individuals with AMC. Here, we report on a 16‐year‐old male with a homozygous ERGIC1 c.250+1G>A variant that was classified as a variant of uncertain ...
Lauren Kerr, Paul McKay, Juliana Marulanda, Zenghui Wu, Reggie Hamdy, Sena Tavukcu, Noémi Dahan‐Oliel, Frank Rauch   +7 more
wiley   +1 more source

The International Consortium for Arthrogryposis: A Collaborative Framework for Early Detection, Care, Research, and Education

American Journal of Medical Genetics Part C: Seminars in Medical Genetics, EarlyView.
ABSTRACT Arthrogryposis multiplex congenita (AMC) is a group of rare congenital conditions, characterized by multiple joint contractures but may involve any body system including central nervous system. AMC is etiologically heterogeneous, with over 400 genetic and many non‐genetic causes implicated in its prenatal development.
Shahrzad Nematollahi, Noa Bouzaglo, Victoria Castillo Sanchez, Johanna I. P. de‐Vries, Klaus Dieterich, Alicja Fafara, Isabel Filges, Philip Giampietro, Göknur Haliloğlu, Judith Hall, Coleman Hilton, Remco Jansen, Valentina Maestri, Carolina Navalon, Daniel Natera de Benito, Tony Pan, Ani Samargian, Bonita Sawatzky, Harold van Bosse, Paul A. Trainor, Noémi Dahan‐Oliel   +20 more
wiley   +1 more source