4-78466288-C-G

Variant names:

• chr4-78466288-C-G
• rs7660664
• NM_025074.7:c.7110C>G

Variant summary

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

The NM_025074.7(FRAS1):​c.7110C>G​(p.His2370Gln) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000000684 in 1,461,648 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 14/18 in silico tools predict a benign outcome for this variant. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar. Another variant affecting the same amino acid position, but resulting in a different missense (i.e. H2370R) has been classified as Uncertain significance.

• Frequency:
  • Genomes: not found (cov: 32)
  • Exomes 𝑓: 6.8e-7 (0 hom.)
• Consequence: FRAS1 NM_025074.7 missense
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: -0.0430
• Publications: 0 publications found

Genes affected

FRAS1 (HGNC:19185): (Fraser extracellular matrix complex subunit 1) This gene encodes an extracellular matrix protein that appears to function in the regulation of epidermal-basement membrane adhesion and organogenesis during development. Mutations in this gene cause Fraser syndrome, a multisystem malformation that can include craniofacial, urogenital and respiratory system abnormalities. Alternative splicing results in multiple transcript variants. [provided by RefSeq, Oct 2009]

FRAS1 Gene-Disease associations (from GenCC):

• Fraser syndrome

  Inheritance: AR Classification: DEFINITIVE, SUPPORTIVE Submitted by: Orphanet, ClinGen
• Fraser syndrome 1

  Inheritance: AR Classification: DEFINITIVE, STRONG Submitted by: G2P, Labcorp Genetics (formerly Invitae)
• renal agenesis, unilateral

  Inheritance: AD 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 (MetaRNN=0.06742534).

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_025074.7. 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
	FRAS1	NM_025074.7	MANE Select	c.7110C>G	p.His2370Gln	missense	Exon 50 of 74	NP_079350.5

Ensembl Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	FRAS1	ENST00000512123.4	TSL:5 MANE Select	c.7110C>G	p.His2370Gln	missense	Exon 50 of 74	ENSP00000422834.2	Q86XX4-2
	FRAS1	ENST00000682513.1		c.7110C>G	p.His2370Gln	missense	Exon 50 of 64	ENSP00000508201.1	A0A804HL50
	FRAS1	ENST00000915768.1		c.7029+1705C>G		intron	N/A	ENSP00000585827.1

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD4 exome AF: 6.84e-7 AC: 1 AN: 1461648 Hom.: 0 Cov.: 44 AF XY: 0.00 AC XY: 0 AN XY: 727096

African (AFR) AF: 0.00 AC: 0 AN: 33478

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

Ashkenazi Jewish (ASJ) AF: 0.00 AC: 0 AN: 26134

East Asian (EAS) AF: 0.00 AC: 0 AN: 39696

South Asian (SAS) AF: 0.00 AC: 0 AN: 86256

European-Finnish (FIN) AF: 0.00 AC: 0 AN: 53402

Middle Eastern (MID) AF: 0.00 AC: 0 AN: 5766

European-Non Finnish (NFE) AF: 8.99e-7 AC: 1 AN: 1111820

Other (OTH) AF: 0.00 AC: 0 AN: 60372

GnomAD4 genome Cov.: 32

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Benign	0.077
BayesDel_addAF	Benign	-0.15	T
BayesDel_noAF	Benign	-0.46
CADD	Benign	10
DANN	Benign	0.83
Eigen	Benign	-0.45
Eigen_PC	Benign	-0.50
FATHMM_MKL	Benign	0.059	N
LIST_S2	Benign	0.61	T
M_CAP	Benign	0.0094	T
MetaRNN	Benign	0.067	T
MetaSVM	Benign	-1.1	T
MutationAssessor	Benign	0.55	N
PhyloP100		-0.043
PrimateAI	Benign	0.23	T
Sift4G	Benign	0.39	T
Vest4		0.097
MVP		0.42
ClinPred		0.027	T
GERP RS		1.8
gMVP		0.26
Mutation Taster		=67/33	polymorphism

Splicing

Name	Calibrated prediction	Score	Prediction
SpliceAI score (max)		0.020		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: rs7660664; hg19: chr4-79387442;