8-43059115-T-G

Variant names:

• chr8-43059115-T-G
• rs779020919
• NM_002027.3:c.224T>G

Variant summary

Our verdict is Uncertain significance. The variant received 4 ACMG points: 4P and 0B. PM2 PP3_Moderate

The NM_002027.3(FNTA):​c.224T>G​(p.Ile75Arg) variant causes a missense change. The variant allele was found at a frequency of 0.00000124 in 1,613,630 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a pathogenic 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. I75T) has been classified as Uncertain significance.

• Frequency:
  • Genomes: 𝑓 0.0000066 (0 hom., cov: 32)
  • Exomes 𝑓: 6.8e-7 (0 hom.)
• Consequence: FNTA NM_002027.3 missense
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: 7.14
• Publications: 3 publications found

Genes affected

FNTA (HGNC:3782): (farnesyltransferase, CAAX box, alpha) Prenyltransferases can attach either a farnesyl group or a geranylgeranyl group in thioether linkage to the cysteine residue of proteins with a C-terminal CAAX box. CAAX geranylgeranyltransferase and CAAX farnesyltransferase are heterodimers that share the same alpha subunit but have different beta subunits. This gene encodes the alpha subunit of these transferases. Alternative splicing results in multiple transcript variants. Related pseudogenes have been identified on chromosomes 11 and 13. [provided by RefSeq, May 2010]

ENSG00000254673 (HGNC:):

ACMG classification

Our verdict: Uncertain_significance. The variant received 4 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• PP3: MetaRNN computational evidence supports a deleterious effect, 0.912

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_002027.3. 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
	FNTA	NM_002027.3	MANE Select	c.224T>G	p.Ile75Arg	missense	Exon 2 of 9	NP_002018.1	P49354-1
	FNTA	NR_033698.2		n.224+2569T>G		intron	N/A

Ensembl Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	FNTA	ENST00000302279.8	TSL:1 MANE Select	c.224T>G	p.Ile75Arg	missense	Exon 2 of 9	ENSP00000303423.3	P49354-1
	FNTA	ENST00000529687.5	TSL:2	c.-230T>G		5_prime_UTR	Exon 2 of 10	ENSP00000473479.1	B3KVN2
	ENSG00000254673	ENST00000534420.1	TSL:4	n.94T>G		non_coding_transcript_exon	Exon 2 of 6	ENSP00000435061.2	H0YE66

Frequencies

GnomAD3 genomes AF: 0.00000657 AC: 1 AN: 152218 Hom.: 0 Cov.: 32

Gnomad AFR AF: 0.00

Gnomad AMI AF: 0.00

Gnomad AMR AF: 0.00

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: 0.0000147

Gnomad OTH AF: 0.00

GnomAD4 exome AF: 6.84e-7 AC: 1 AN: 1461412 Hom.: 0 Cov.: 30 AF XY: 0.00 AC XY: 0 AN XY: 727046

African (AFR) AF: 0.0000299 AC: 1 AN: 33468

American (AMR) AF: 0.00 AC: 0 AN: 44688

Ashkenazi Jewish (ASJ) AF: 0.00 AC: 0 AN: 26130

East Asian (EAS) AF: 0.00 AC: 0 AN: 39672

South Asian (SAS) AF: 0.00 AC: 0 AN: 86212

European-Finnish (FIN) AF: 0.00 AC: 0 AN: 53416

Middle Eastern (MID) AF: 0.00 AC: 0 AN: 5560

European-Non Finnish (NFE) AF: 0.00 AC: 0 AN: 1111906

Other (OTH) AF: 0.00 AC: 0 AN: 60360

GnomAD4 genome AF: 0.00000657 AC: 1 AN: 152218 Hom.: 0 Cov.: 32 AF XY: 0.00 AC XY: 0 AN XY: 74362

African (AFR) AF: 0.00 AC: 0 AN: 41464

American (AMR) AF: 0.00 AC: 0 AN: 15282

Ashkenazi Jewish (ASJ) AF: 0.00 AC: 0 AN: 3468

East Asian (EAS) AF: 0.00 AC: 0 AN: 5200

South Asian (SAS) AF: 0.00 AC: 0 AN: 4832

European-Finnish (FIN) AF: 0.00 AC: 0 AN: 10620

Middle Eastern (MID) AF: 0.00 AC: 0 AN: 316

European-Non Finnish (NFE) AF: 0.0000147 AC: 1 AN: 68030

Other (OTH) AF: 0.00 AC: 0 AN: 2094

Alfa AF: 0.0000282 Hom.: 0

Bravo AF: 0.00000756

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Pathogenic	0.90
BayesDel_addAF	Uncertain	0.068	T
BayesDel_noAF	Benign	-0.14
CADD	Pathogenic	27
DANN	Uncertain	0.99
DEOGEN2	Uncertain	0.42	T
Eigen	Uncertain	0.67
Eigen_PC	Uncertain	0.65
FATHMM_MKL	Pathogenic	0.99	D
LIST_S2	Uncertain	0.89	D
M_CAP	Benign	0.073	D
MetaRNN	Pathogenic	0.91	D
MetaSVM	Uncertain	-0.22	T
MutationAssessor	Benign	1.2	L
PhyloP100		7.1
PrimateAI	Uncertain	0.57	T
PROVEAN	Pathogenic	-5.9	D
REVEL	Uncertain	0.42
Sift	Uncertain	0.0010	D
Sift4G	Pathogenic	0.0010	D
Polyphen		0.92	P
Vest4		0.70
MutPred		0.82		Gain of disorder (P = 0.0076)
MVP		0.32
MPC		0.97
ClinPred		1.0	D
GERP RS		5.1
PromoterAI		-0.0088	Neutral
RBP_binding_hub_radar		0.0
RBP_regulation_power_radar		1.8
Varity_R		0.93
gMVP		0.81
Mutation Taster		=67/33	polymorphism

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

Other links and lift over

dbSNP: rs779020919; hg19: chr8-42914258;