rs1805578

Variant names:

• chr3-180912712-C-A
• rs1805578
• NM_005087.4:c.27C>A

Your query was ambiguous. Multiple possible variants found:

• chr3-180912712-C-A
• chr3-180912712-C-G
• chr3-180912712-C-T

Variant summary

Our verdict is Uncertain significance. The variant received 0 ACMG points: 2P and 2B. PM2 BP4 BP7

The NM_005087.4(FXR1):​c.27C>A​(p.Arg9Arg) variant causes a synonymous change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00000137 in 1,461,808 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar. Synonymous variant affecting the same amino acid position (i.e. R9R) has been classified as Benign.

• Frequency:
  • Genomes: not found (cov: 32)
  • Exomes 𝑓: 0.0000014 (0 hom.)
• Consequence: FXR1 NM_005087.4 synonymous
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: -0.0850
• Publications: 0 publications found

Genes affected

FXR1 (HGNC:4023): (FMR1 autosomal homolog 1) The protein encoded by this gene is an RNA binding protein that interacts with the functionally-similar proteins FMR1 and FXR2. These proteins shuttle between the nucleus and cytoplasm and associate with polyribosomes, predominantly with the 60S ribosomal subunit. Three transcript variants encoding different isoforms have been found for this gene. [provided by RefSeq, Jul 2008]

FXR1 Gene-Disease associations (from GenCC):

• congenital myopathy

  Inheritance: AR Classification: STRONG Submitted by: G2P
• myopathy, congenital, with respiratory insufficiency and bone fractures

  Inheritance: AR Classification: STRONG Submitted by: Labcorp Genetics (formerly Invitae)
• myopathy, congenital proximal, with minicore lesions

  Inheritance: AR Classification: LIMITED Submitted by: Ambry Genetics

ENSG00000296167 (HGNC:):

ACMG classification

Our verdict: Uncertain_significance. The variant received 0 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• BP4: Computational evidence support a benign effect (BayesDel_noAF=-0.15).
• BP7: Synonymous conserved (PhyloP=-0.085 with no splicing effect.

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_005087.4. You can select a different transcript below to see updated ACMG assignments.

RefSeq Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	FXR1	NM_005087.4	MANE Select	c.27C>A	p.Arg9Arg	synonymous	Exon 1 of 17	NP_005078.2	P51114-1
	FXR1	NM_001441509.1		c.27C>A	p.Arg9Arg	synonymous	Exon 1 of 17	NP_001428438.1
	FXR1	NM_001441510.1		c.27C>A	p.Arg9Arg	synonymous	Exon 1 of 16	NP_001428439.1

Ensembl Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	FXR1	ENST00000357559.9	TSL:1 MANE Select	c.27C>A	p.Arg9Arg	synonymous	Exon 1 of 17	ENSP00000350170.3	P51114-1
	FXR1	ENST00000445140.6	TSL:1	c.27C>A	p.Arg9Arg	synonymous	Exon 1 of 16	ENSP00000388828.2	P51114-2
	FXR1	ENST00000963215.1		c.27C>A	p.Arg9Arg	synonymous	Exon 1 of 17	ENSP00000633274.1

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD4 exome AF: 0.00000137 AC: 2 AN: 1461808 Hom.: 0 Cov.: 34 AF XY: 0.00000138 AC XY: 1 AN XY: 727222

⚠️ The allele balance in gnomAD version 4 Exomes is significantly skewed from the expected value of 0.5.

African (AFR) AF: 0.00 AC: 0 AN: 33480

American (AMR) AF: 0.00 AC: 0 AN: 44724

Ashkenazi Jewish (ASJ) AF: 0.00 AC: 0 AN: 26136

East Asian (EAS) AF: 0.00 AC: 0 AN: 39698

South Asian (SAS) AF: 0.00 AC: 0 AN: 86254

European-Finnish (FIN) AF: 0.00 AC: 0 AN: 53420

Middle Eastern (MID) AF: 0.00 AC: 0 AN: 5768

European-Non Finnish (NFE) AF: 0.00000180 AC: 2 AN: 1111934

Other (OTH) AF: 0.00 AC: 0 AN: 60394

⚠️ The allele balance in gnomAD4 Exomes is highly skewed from 0.5 (p-value = 0), which strongly suggests a high chance of mosaicism in these individuals.

GnomAD4 genome Cov.: 32

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
BayesDel_noAF	Benign	-0.15
CADD	Benign	12
DANN	Benign	0.92
PhyloP100		-0.085
PromoterAI		-0.25	Neutral
RBP_binding_hub_radar		0.0
RBP_regulation_power_radar		1.7

Splicing

Name	Calibrated prediction	Score	Prediction
SpliceAI score (max)		0.0		Details are displayed if max score is > 0.2

Find out detailed SpliceAI scores and Pangolin per-transcript scores at spliceailookup.broadinstitute.org

Other links and lift over

dbSNP: rs1805578; hg19: chr3-180630500;