X-147912049-CGCGGCGGCG-C

Variant summary

Our verdict is Benign. Variant got -10 ACMG points: 0P and 10B. BP6_Moderate BS1 BS2

The NM_002024.6(FMR1):c.-108_-100del variant causes a 5 prime UTR change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000819 in 41,497 control chromosomes in the GnomAD database, including 1 homozygotes. There are 15 hemizygotes in GnomAD. Variant has been reported in ClinVar as Benign (★).

• Frequency:
  • Genomes: 𝑓 0.00051 (0 hom., 4 hem., cov: 2)
  • Exomes 𝑓: 0.0025 (1 hom. 11 hem.)
• Consequence: FMR1 NM_002024.6 5_prime_UTR
• Clinical Significance: Benign criteria provided, single submitter B:1
• Conservation: PhyloP100: 1.53

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]

ACMG classification

Verdict is Benign. Variant got -10 ACMG points.

• BP6: Variant X-147912049-CGCGGCGGCG-C is Benign according to our data. Variant chrX-147912049-CGCGGCGGCG-C is described in ClinVar as [Benign]. Clinvar id is 1166634.Status of the report is criteria_provided_single_submitter, 1 stars.
• BS1: Variant frequency is greater than expected in population amr. gnomad4 allele frequency = 0.000512 (18/35174) while in subpopulation AMR AF= 0.000725 (2/2760). AF 95% confidence interval is 0.00032. There are 0 homozygotes in gnomad4. There are 4 alleles in male gnomad4 subpopulation. Median coverage is 2. This position pass quality control queck.
• BS2: High Hemizygotes in GnomAd at 4 XL gene

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
FMR1	NM_002024.6	c.-108_-100del		5_prime_UTR_variant	1/17	ENST00000370475.9

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
FMR1	ENST00000370475.9	c.-108_-100del		5_prime_UTR_variant	1/17	1	NM_002024.6	P3

Frequencies

GnomAD3 genomes AF: 0.000512 AC: 18 AN: 35174 Hom.: 0 Cov.: 2 AF XY: 0.000690 AC XY: 4 AN XY: 5800

Gnomad AFR AF: 0.000513

Gnomad AMI AF: 0.00

Gnomad AMR AF: 0.000725

Gnomad ASJ AF: 0.00

Gnomad EAS AF: 0.00

Gnomad SAS AF: 0.00

Gnomad FIN AF: 0.00

Gnomad MID AF: 0.00

Gnomad NFE AF: 0.000570

Gnomad OTH AF: 0.00

GnomAD4 exome AF: 0.00253 AC: 16 AN: 6323 Hom.: 1 AF XY: 0.00322 AC XY: 11 AN XY: 3413

Gnomad4 AFR exome AF: 0.0303

Gnomad4 AMR exome AF: 0.00

Gnomad4 ASJ exome AF: 0.00

Gnomad4 EAS exome AF: 0.00

Gnomad4 SAS exome AF: 0.0103

Gnomad4 FIN exome AF: 0.00

Gnomad4 NFE exome AF: 0.00236

Gnomad4 OTH exome AF: 0.00

GnomAD4 genome AF: 0.000512 AC: 18 AN: 35174 Hom.: 0 Cov.: 2 AF XY: 0.000690 AC XY: 4 AN XY: 5800

Gnomad4 AFR AF: 0.000513

Gnomad4 AMR AF: 0.000725

Gnomad4 ASJ AF: 0.00

Gnomad4 EAS AF: 0.00

Gnomad4 SAS AF: 0.00

Gnomad4 FIN AF: 0.00

Gnomad4 NFE AF: 0.000570

Gnomad4 OTH AF: 0.00

ClinVar

Significance: Benign

Submissions summary: Benign:1

Revision: criteria provided, single submitter

Submissions by phenotype

not provided Benign:1

Benign, criteria provided, single submitter

clinical testing

Invitae

Nov 12, 2019

- -

Computational scores

Source: dbNSFP v4.3

Splicing

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

Publications

LitVar

Other links and lift over

dbSNP: rs193922936; hg19: chrX-146993567;