chr1-108722353-A-T

Position:

• chr1-108722353-A-T

Variant summary

Our verdict is Uncertain significance. Variant got 1 ACMG points: 2P and 1B. PM2 BP4

The NM_001144937.3(FNDC7):​c.617A>T​(p.Asn206Ile) variant causes a missense 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. 14/21 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).

• Frequency: Genomes: not found (cov: 32)
• Consequence: FNDC7 NM_001144937.3 missense
• Clinical Significance: Uncertain significance criteria provided, single submitter U:1
• Conservation: PhyloP100: 2.42

Genes affected

FNDC7 (HGNC:26668): (fibronectin type III domain containing 7) Predicted to be located in extracellular region. [provided by Alliance of Genome Resources, Apr 2022]

ACMG classification

Verdict is Uncertain_significance. Variant got 1 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• BP4: Computational evidence support a benign effect (MetaRNN=0.30318496).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
FNDC7	NM_001144937.3	c.617A>T	p.Asn206Ile	missense_variant	5/13	ENST00000370017.9

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
FNDC7	ENST00000370017.9	c.617A>T	p.Asn206Ile	missense_variant	5/13	5	NM_001144937.3	P1

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD4 exome Cov.: 29

GnomAD4 genome Cov.: 32

Bravo AF: 0.00000378

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

Submissions by phenotype

not specified Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Ambry Genetics

Feb 28, 2024

The c.617A>T (p.N206I) alteration is located in exon 5 (coding exon 5) of the FNDC7 gene. This alteration results from a A to T substitution at nucleotide position 617, causing the asparagine (N) at amino acid position 206 to be replaced by an isoleucine (I). Based on insufficient or conflicting evidence, the clinical significance of this alteration remains unclear. -

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Benign	0.18
BayesDel_addAF	Benign	-0.15	T
BayesDel_noAF	Benign	-0.45
CADD	Benign	20
DANN	Benign	0.97
DEOGEN2	Benign	0.044	T
Eigen	Uncertain	0.23
Eigen_PC	Uncertain	0.31
FATHMM_MKL	Uncertain	0.93	D
LIST_S2	Benign	0.75	T
M_CAP	Benign	0.018	T
MetaRNN	Benign	0.30	T
MetaSVM	Benign	-1.0	T
MutationAssessor	Benign	1.2	L
MutationTaster	Benign	0.87	D;D
PrimateAI	Benign	0.36	T
PROVEAN	Uncertain	-3.0	D
REVEL	Benign	0.17
Sift	Benign	0.064	T
Sift4G	Uncertain	0.0030	D
Vest4		0.27
MutPred		0.62		Loss of disorder (P = 0.0241);
MVP		0.67
MPC		0.25
ClinPred		0.58	D
GERP RS		4.5
Varity_R		0.27
gMVP		0.30

Splicing

Name	Calibrated prediction	Score	Prediction
SpliceAI score (max)		0.010		Details are displayed if max score is > 0.2

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

Publications

LitVar

Other links and lift over

dbSNP: rs942464747; hg19: chr1-109264975;