scholarly journals Mutation c.943G>T (p.Ala315Ser) in FGFR2 Causing a Mild Phenotype of Crouzon Craniofacial Dysostosis in a Three-Generation Family

2017 ◽  
Vol 8 (2) ◽  
pp. 93-97 ◽  
Author(s):  
Luitgard M. Graul-Neumann ◽  
Eva Klopocki ◽  
Nicolai Adolphs ◽  
Martin A. Mensah ◽  
Wolfram Kress
Keyword(s):  
Mild Phenotype ◽  
Craniofacial Dysostosis ◽  
Generation Family

Thomsen myotonia-A 4-generation family with a new mutation and a mild phenotype

2015 ◽  
Vol 53 (4) ◽  
pp. 653-654
Author(s):  
Adina-Ioana Derevenciuc ◽  
Angela Abicht ◽  
Suad Hamza ◽  
Christian Roth ◽  
Andreas Ferbert
Keyword(s):  
New Mutation ◽  
Mild Phenotype ◽  
Generation Family

New mutation in TSC1-gene in a sporadic case with initially mild phenotype

2012 ◽  
Vol 43 (02) ◽  
Author(s):  
C Thiels ◽  
C Köhler ◽  
K Weigt-Usinger ◽  
C Sutter ◽  
T Lücke
Keyword(s):  
Sporadic Case ◽  
New Mutation ◽  
Mild Phenotype ◽  
Tsc1 Gene

scholarly journals A Mild Phenotype Caused by Two Novel Compound Heterozygous Mutations in CEP290

Genes ◽  
2020 ◽  
Vol 11 (11) ◽  
pp. 1240
Author(s):  
Agnieszka Rafalska ◽  
Anna M. Tracewska ◽  
Anna Turno-Kręcicka ◽  
Milena J. Szafraniec ◽  
Marta Misiuk-Hojło
Keyword(s):  
Vision Loss ◽  
Compound Heterozygous ◽  
Loss Of Function ◽  
Mild Phenotype ◽  
Cone Function ◽  
Retinal Disorders ◽  
Molecular Inversion Probes ◽  
Disease Experience ◽  
The Individual ◽  
Inherited Retinal Disorders

CEP290 is a ciliary gene frequently mutated in ciliopathies, resulting in a broad range of phenotypes, ranging from isolated inherited retinal disorders (IRDs) to severe or lethal syndromes with multisystemic involvement. Patients with non-syndromic CEP290-linked disease experience profound and early vision loss due to cone-rod dystrophy, as in Leber congenital amaurosis. In this case report, we describe two novel loss-of-function heterozygous alterations in the CEP290 gene, discovered in a patient suffering from retinitis pigmentosa using massive parallel sequencing of a molecular inversion probes library constructed for 108 genes involved in IRDs. A milder phenotype than expected was found in the individual, which serves to prove that some CEP290-associated disorders may display preserved cone function.

scholarly journals Loss-of-function and missense variants in NSD2 cause decreased methylation activity and are associated with a distinct developmental phenotype

2021 ◽  
Author(s):  
Paolo Zanoni ◽  
Katharina Steindl ◽  
Deepanwita Sengupta ◽  
Pascal Joset ◽  
Angela Bahr ◽  
...  
Keyword(s):  
Loss Of Function ◽  
Mild Phenotype ◽  
Psychological Issues ◽  
Missense Variants ◽  
Mild Developmental Delay ◽  
Pathogenic Variants ◽  
In Silico Modeling ◽  
And Function ◽  
Methylation Activity

Abstract Purpose Despite a few recent reports of patients harboring truncating variants in NSD2, a gene considered critical for the Wolf–Hirschhorn syndrome (WHS) phenotype, the clinical spectrum associated with NSD2 pathogenic variants remains poorly understood. Methods We collected a comprehensive series of 18 unpublished patients carrying heterozygous missense, elongating, or truncating NSD2 variants; compared their clinical data to the typical WHS phenotype after pooling them with ten previously described patients; and assessed the underlying molecular mechanism by structural modeling and measuring methylation activity in vitro. Results The core NSD2-associated phenotype includes mostly mild developmental delay, prenatal-onset growth retardation, low body mass index, and characteristic facial features distinct from WHS. Patients carrying missense variants were significantly taller and had more frequent behavioral/psychological issues compared with those harboring truncating variants. Structural in silico modeling suggested interference with NSD2’s folding and function for all missense variants in known structures. In vitro testing showed reduced methylation activity and failure to reconstitute H3K36me2 in NSD2 knockout cells for most missense variants. Conclusion NSD2 loss-of-function variants lead to a distinct, rather mild phenotype partially overlapping with WHS. To avoid confusion for patients, NSD2 deficiency may be named Rauch–Steindl syndrome after the delineators of this phenotype.

scholarly journals Heterogeneity of the Clinical Presentation of the MEN1 LRG_509 c.781C>T (p.Leu261Phe) Variant Within a Three-Generation Family

Genes ◽  
2021 ◽  
Vol 12 (4) ◽  
pp. 512
Author(s):  
Aleksandra Gilis-Januszewska ◽  
Anna Bogusławska ◽  
Kornelia Hasse-Lazar ◽  
Beata Jurecka-Lubieniecka ◽  
Barbara Jarząb ◽  
...  
Keyword(s):  
Neuroendocrine Tumor ◽  
Clinical Presentation ◽  
Age Of Onset ◽  
Malignant Tumors ◽  
Genetic Disorder ◽  
Family Members ◽  
Pancreatic Neuroendocrine Tumor ◽  
Index Patient ◽  
Generation Family

Multiple neuroendocrine neoplasia type 1 (MEN1) is a rare genetic disorder with an autosomal dominant inheritance, predisposing carriers to benign and malignant tumors. The phenotype of MEN1 syndrome varies between patients in terms of tumor localization, age of onset, and clinical aggressiveness, even between affected members within the same family. We describe a heterogenic phenotype of the MEN1 variant c.781C>T (LRG_509t1), which was previously reported only once in a family with isolated hyperparathyroidism. A heterozygous missense variant in exon 4 of the gene was identified in the sequence of the MEN1 gene, i.e., c.781C>T, leading to the amino acid change p.Leu261Phe in a three-generation family. In the screened family, 5/6 affected members had already developed hyperparathyroidism. In the index patient and two other family members, an aggressive course of pancreatic neuroendocrine tumor (insulinoma and non-functioning neuroendocrine tumors) with dissemination was diagnosed. In the index patient, late diagnosis and slow progression of the disseminated neuroendocrine tumor have been observed (24 years of follow-up). The very rare variant of MEN1, LRG_509t1 c.781C>T /p.Leu261Phe (LRG_509p1), diagnosed within a three-generation family has a heterogenic clinical presentation. Further follow-up of the family members should be carried out to confirm the spectrum and exact time of clinical presentation.

Fh-Souassi: a founder frameshift mutation in exon 10 of the LDL-receptor gene, associated with a mild phenotype in Tunisian families

2001 ◽  
Vol 154 (3) ◽  
pp. 557-565 ◽  
Author(s):  
M.N. Slimane ◽  
S. Lestavel ◽  
X.-M. Sun ◽  
F. Maatouk ◽  
A.K. Soutar ◽  
...  
Keyword(s):  
Frameshift Mutation ◽  
Receptor Gene ◽  
Ldl Receptor ◽  
Mild Phenotype ◽  
Exon 10

Unexpected diagnosis of 45,X/47,XX,+18 mosaicism in a girl with mild phenotype

2009 ◽  
Vol 149A (11) ◽  
pp. 2584-2587 ◽  
Author(s):  
Caroline Schluth-Bolard ◽  
Damien Sanlaville ◽  
Audrey Labalme ◽  
Marianne Till ◽  
Laurence Michel-Calemard ◽  
...  
Keyword(s):  
Mild Phenotype

A new heritable fragile site at 15q13 in a three-generation family

2007 ◽  
Vol 116 (4) ◽  
pp. 252-255
Author(s):  
A.G. Zamani ◽  
H.G. Durakbasi-Dursun ◽  
A. Acar
Keyword(s):  
Fragile Site ◽  
Generation Family
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