ENST00000334557.10:c.*27T>C

Variant names:

• chrX-147933441-T-C
• rs4824232
• ENST00000334557.10:c.*27T>C

Variant summary

Our verdict is Likely benign. The variant received -2 ACMG points: 2P and 4B. PM2 BP4_Strong

The ENST00000334557.10(FMR1):​c.*27T>C variant causes a 3 prime UTR change involving the alteration of a non-conserved nucleotide. The variant was absent in control chromosomes in GnomAD project. In-silico tool predicts a benign outcome for this variant. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar.

• Frequency:
  • Genomes: not found (cov: 22)
  • Exomes 𝑓: 0.0 (0 hom. 0 hem.)
  • Failed GnomAD Quality Control
• Consequence: FMR1 ENST00000334557.10 3_prime_UTR
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: -0.282
• Publications: 5 publications found

Genes affected

FMR1 (HGNC:3775): (fragile X messenger ribonucleoprotein 1) The protein encoded by this gene binds RNA and is associated with polysomes. The encoded protein may be involved in mRNA trafficking from the nucleus to the cytoplasm. A trinucleotide repeat (CGG) in the 5' UTR is normally found at 6-53 copies, but an expansion to 55-230 repeats is the cause of fragile X syndrome. Expansion of the trinucleotide repeat may also cause one form of premature ovarian failure (POF1). Multiple alternatively spliced transcript variants that encode different protein isoforms and which are located in different cellular locations have been described for this gene. [provided by RefSeq, May 2010]

FMR1 Gene-Disease associations (from GenCC):

• fragile X syndrome

  Inheritance: XL Classification: DEFINITIVE, STRONG, SUPPORTIVE Submitted by: Ambry Genetics, ClinGen, G2P, Orphanet, Labcorp Genetics (formerly Invitae), Myriad Women’s Health
• fragile X-associated tremor/ataxia syndrome

  Inheritance: XL Classification: DEFINITIVE, STRONG, SUPPORTIVE Submitted by: Ambry Genetics, G2P, Labcorp Genetics (formerly Invitae), Orphanet
• premature ovarian failure 1

  Inheritance: XL Classification: DEFINITIVE, STRONG Submitted by: Labcorp Genetics (formerly Invitae), Ambry Genetics, G2P
• symptomatic form of fragile X syndrome in female carrier

  Inheritance: XL Classification: SUPPORTIVE Submitted by: Orphanet

ACMG classification

Our verdict: Likely_benign. The variant received -2 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• BP4: Computational evidence support a benign effect (BayesDel_noAF=-0.83).

Variant Effect in Transcripts

ACMG analysis was done for transcript: ENST00000334557.10. 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
	FMR1	NM_002024.6	MANE Select	c.880+678T>C		intron	N/A	NP_002015.1	Q06787-1
	FMR1	NM_001185076.2		c.880+678T>C		intron	N/A	NP_001172005.1	Q06787-9
	FMR1	NM_001185082.2		c.880+678T>C		intron	N/A	NP_001172011.1	Q06787-8

Ensembl Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	FMR1	ENST00000334557.10	TSL:1	c.*27T>C		3_prime_UTR	Exon 10 of 10	ENSP00000355115.4	Q8IXW7
	FMR1	ENST00000370475.9	TSL:1 MANE Select	c.880+678T>C		intron	N/A	ENSP00000359506.5	Q06787-1
	FMR1	ENST00000218200.12	TSL:1	c.880+678T>C		intron	N/A	ENSP00000218200.8	Q06787-9

Frequencies

GnomAD3 genomes Cov.: 22

GnomAD4 exome Data not reliable, filtered out with message: AC0 AF: 0.00 AC: 0 AN: 888485 Hom.: 0 Cov.: 15 AF XY: 0.00 AC XY: 0 AN XY: 254207

African (AFR) AF: 0.00 AC: 0 AN: 18270

American (AMR) AF: 0.00 AC: 0 AN: 8524

Ashkenazi Jewish (ASJ) AF: 0.00 AC: 0 AN: 13388

East Asian (EAS) AF: 0.00 AC: 0 AN: 21079

South Asian (SAS) AF: 0.00 AC: 0 AN: 29793

European-Finnish (FIN) AF: 0.00 AC: 0 AN: 31958

Middle Eastern (MID) AF: 0.00 AC: 0 AN: 3180

European-Non Finnish (NFE) AF: 0.00 AC: 0 AN: 725292

Other (OTH) AF: 0.00 AC: 0 AN: 37001

GnomAD4 genome Cov.: 22

Alfa AF: 0.000164 Hom.: 0

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
BayesDel_noAF	Benign	-0.83
CADD	Benign	5.5
PhyloP100		-0.28

Splicing

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

Other links and lift over

dbSNP: rs4824232; hg19: chrX-147014960;