rs1466642025

Positions:

• chr2-222631635-A-G

Variant summary

Our verdict is Likely pathogenic. Variant got 7 ACMG points: 7P and 0B. PM2 PP3_Strong PP5

The NM_005687.5(FARSB):​c.755T>C​(p.Phe252Ser) variant causes a missense change involving the alteration of a conserved nucleotide. The variant allele was found at a frequency of 0.00000657 in 152,236 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a pathogenic outcome for this variant. Variant has been reported in ClinVar as Pathogenic (no stars).

• Frequency: Genomes: 𝑓 0.0000066 (0 hom., cov: 33)
• Consequence: FARSB NM_005687.5 missense
• Clinical Significance: Pathogenic no assertion criteria provided P:2
• Conservation: PhyloP100: 7.42

Genes affected

FARSB (HGNC:17800): (phenylalanyl-tRNA synthetase subunit beta) This gene encodes a highly conserved enzyme that belongs to the aminoacyl-tRNA synthetase class IIc subfamily. This enzyme comprises the regulatory beta subunits that form a tetramer with two catalytic alpha subunits. In the presence of ATP, this tetramer is responsible for attaching L-phenylalanine to the terminal adenosine of the appropriate tRNA. A pseudogene located on chromosome 10 has been identified. Alternative splicing results in multiple transcript variants. [provided by RefSeq, Jan 2015]

FARSB (HGNC:):

ACMG classification

Verdict is Likely_pathogenic. Variant got 7 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• PP3: MetaRNN computational evidence supports a deleterious effect, 0.973
• PP5: Variant 2-222631635-A-G is Pathogenic according to our data. Variant chr2-222631635-A-G is described in ClinVar as [Pathogenic]. Clinvar id is 545694.Status of the report is no_assertion_criteria_provided, 0 stars.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
FARSB	NM_005687.5	c.755T>C	p.Phe252Ser	missense_variant	8/17	ENST00000281828.8	NP_005678.3
FARSB	XM_006712169.3	c.458T>C	p.Phe153Ser	missense_variant	9/18		XP_006712232.1
FARSB	XM_011510466.3	c.458T>C	p.Phe153Ser	missense_variant	9/18		XP_011508768.1
FARSB	NR_130154.2	n.970T>C		non_coding_transcript_exon_variant	9/18

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
FARSB	ENST00000281828.8	c.755T>C	p.Phe252Ser	missense_variant	8/17	1	NM_005687.5	ENSP00000281828.6

Frequencies

GnomAD3 genomes AF: 0.00000657 AC: 1 AN: 152236 Hom.: 0 Cov.: 33

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 Cov.: 24

GnomAD4 genome AF: 0.00000657 AC: 1 AN: 152236 Hom.: 0 Cov.: 33 AF XY: 0.00 AC XY: 0 AN XY: 74386

Gnomad4 AFR AF: 0.00

Gnomad4 AMR AF: 0.00

Gnomad4 ASJ AF: 0.00

Gnomad4 EAS AF: 0.00

Gnomad4 SAS AF: 0.00

Gnomad4 FIN AF: 0.00

Gnomad4 NFE AF: 0.0000147

Gnomad4 OTH AF: 0.00

Bravo AF: 0.00000378

ClinVar

Significance: Pathogenic

Submissions summary: Pathogenic:2

Revision: no assertion criteria provided

Submissions by phenotype

Vascular dilatation;C0023890:Cirrhosis of liver;C0206061:Interstitial pneumonitis;C0270685:Cerebral calcification Pathogenic:1

Pathogenic, no assertion criteria provided

research

Institute of Human Genetics Munich, Klinikum Rechts Der Isar, TU München

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Rajab interstitial lung disease with brain calcifications Pathogenic:1

Pathogenic, no assertion criteria provided

literature only

OMIM

Sep 08, 2020

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Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Pathogenic	0.97
BayesDel_addAF	Pathogenic	0.25	D
BayesDel_noAF	Uncertain	0.12
CADD	Pathogenic	27
DANN	Uncertain	1.0
DEOGEN2	Uncertain	0.65	D
Eigen	Pathogenic	0.92
Eigen_PC	Pathogenic	0.80
FATHMM_MKL	Pathogenic	0.99	D
LIST_S2	Pathogenic	0.99	D
M_CAP	Uncertain	0.15	D
MetaRNN	Pathogenic	0.97	D
MetaSVM	Uncertain	-0.062	T
MutationAssessor	Pathogenic	4.0	H
PrimateAI	Uncertain	0.63	T
PROVEAN	Pathogenic	-6.8	D
REVEL	Pathogenic	0.69
Sift	Pathogenic	0.0	D
Sift4G	Pathogenic	0.0	D
Polyphen		1.0	D
Vest4		0.81
MutPred		0.84		Loss of stability (P = 0.0234);
MVP		0.57
MPC		0.99
ClinPred		1.0	D
GERP RS		5.3
Varity_R		0.97
gMVP		0.96

Splicing

Name	Calibrated prediction	Score	Prediction
SpliceAI score (max)		0.0		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: rs1466642025; hg19: chr2-223496354;