Our verdict is Uncertain significance. Variant got 0 ACMG points: 3P and 3B. PM2PP2BP4_ModerateBP6
The NM_023110.3(FGFR1):c.2464C>T(p.Arg822Cys) variant causes a missense change involving the alteration of a conserved nucleotide. The variant allele was found at a frequency of 0.000327 in 1,608,900 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Conflicting classifications of pathogenicity (no stars). Another variant affecting the same amino acid position, but resulting in a different missense (i.e. R822H) has been classified as Uncertain significance.
FGFR1 (HGNC:3688): (fibroblast growth factor receptor 1) The protein encoded by this gene is a member of the fibroblast growth factor receptor (FGFR) family, where amino acid sequence is highly conserved between members and throughout evolution. FGFR family members differ from one another in their ligand affinities and tissue distribution. A full-length representative protein consists of an extracellular region, composed of three immunoglobulin-like domains, a single hydrophobic membrane-spanning segment and a cytoplasmic tyrosine kinase domain. The extracellular portion of the protein interacts with fibroblast growth factors, setting in motion a cascade of downstream signals, ultimately influencing mitogenesis and differentiation. This particular family member binds both acidic and basic fibroblast growth factors and is involved in limb induction. Mutations in this gene have been associated with Pfeiffer syndrome, Jackson-Weiss syndrome, Antley-Bixler syndrome, osteoglophonic dysplasia, and autosomal dominant Kallmann syndrome 2. Chromosomal aberrations involving this gene are associated with stem cell myeloproliferative disorder and stem cell leukemia lymphoma syndrome. Alternatively spliced variants which encode different protein isoforms have been described; however, not all variants have been fully characterized. [provided by RefSeq, Jul 2008]
Verdict is Uncertain_significance. Variant got 0 ACMG points.
PM2
?
PM2 - Absent from controls (or at extremely low frequency if recessive) in Exome Sequencing Project, 1000 Genomes Project, or Exome Aggregation Consortium
Very rare variant in population databases, with high coverage;
PP2
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PP2 - Missense variant in a gene that has a low rate of benign missense variation and in which missense variants are a common mechanism of disease
Missense variant where missense usually causes diseases, FGFR1
BP4
?
BP4 - Multiple lines of computational evidence suggest no impact on gene or gene product (conservation, evolutionary, splicing impact, etc.)
Computational evidence support a benign effect (MetaRNN=0.13991779).
BP6
?
BP6 - Reputable source recently reports variant as benign, but the evidence is not available to the laboratory to perform an independent evaluation
Variant 8-38413633-G-A is Benign according to our data. Variant chr8-38413633-G-A is described in ClinVar as [Conflicting_classifications_of_pathogenicity]. Clinvar id is 536195.We mark this variant Likely_benign, oryginal submissions are: {Likely_benign=4, Benign=3, Uncertain_significance=1}. Variant chr8-38413633-G-A is described in Lovd as [Likely_pathogenic].
Hypogonadotropic hypogonadism 2 with or without anosmia Uncertain:1Benign:1
Uncertain significance, criteria provided, single submitter
research
Reproductive Endocrine Unit, Massachusetts General Hospital
May 04, 2023
The variant has been classified as VUS based on the variant meeting the following ACMG Criteria: BS3. -
Likely benign, criteria provided, single submitter
clinical testing
Illumina Laboratory Services, Illumina
Apr 28, 2017
This variant was observed as part of a predisposition screen in an ostensibly healthy population. A literature search was performed for the gene, cDNA change, and amino acid change (where applicable). Publications were found based on this search. The evidence from the literature, in combination with allele frequency data from public databases where available, was sufficient to determine this variant is unlikely to cause disease. Therefore, this variant is classified as likely benign. -
Trigonocephaly 1 Benign:1
Benign, criteria provided, single submitter
clinical testing
Illumina Laboratory Services, Illumina
Apr 28, 2017
This variant was observed as part of a predisposition screen in an ostensibly healthy population. A literature search was performed for the gene, cDNA change, and amino acid change (where applicable). No publications were found based on this search. Allele frequency data from public databases was too high to be consistent with this variant causing disease. Therefore, this variant is classified as benign. -
FGFR1-related disorder Benign:1
Likely benign, criteria provided, single submitter
clinical testing
PreventionGenetics, part of Exact Sciences
Oct 31, 2022
This variant is classified as likely benign based on ACMG/AMP sequence variant interpretation guidelines (Richards et al. 2015 PMID: 25741868, with internal and published modifications). -
not provided Benign:1
Likely benign, criteria provided, single submitter
clinical testing
GeneDx
Jun 21, 2021
In silico analysis supports that this missense variant does not alter protein structure/function; This variant is associated with the following publications: (PMID: Neocleous2019[Abstract], 32982993, 27535533, 29419413, 18985070, 17154279, 23329143) -
Osteoglophonic dysplasia Benign:1
Benign, criteria provided, single submitter
clinical testing
Illumina Laboratory Services, Illumina
Apr 28, 2017
This variant was observed as part of a predisposition screen in an ostensibly healthy population. A literature search was performed for the gene, cDNA change, and amino acid change (where applicable). No publications were found based on this search. Allele frequency data from public databases was too high to be consistent with this variant causing disease. Therefore, this variant is classified as benign. -
Pfeiffer syndrome;C1563720:Hypogonadotropic hypogonadism 2 with or without anosmia Benign:1
Likely benign, criteria provided, single submitter
clinical testing
Invitae
Dec 01, 2021
- -
Craniosynostosis syndrome Benign:1
Benign, criteria provided, single submitter
clinical testing
Illumina Laboratory Services, Illumina
Apr 28, 2017
This variant was observed as part of a predisposition screen in an ostensibly healthy population. A literature search was performed for the gene, cDNA change, and amino acid change (where applicable). No publications were found based on this search. Allele frequency data from public databases was too high to be consistent with this variant causing disease. Therefore, this variant is classified as benign. -