Genetic Variant FAM78B:p.Arg221Leu (chr1-166070365-C-A) – ACMG Classification: Uncertain_significance (0 pts)

Variant summary

Our verdict is Uncertain significance. The variant received 0 ACMG points: 2P and 2B. PM2BP4_Moderate

The NM_001017961.5(FAM78B):c.662G>T(p.Arg221Leu) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00000205 in 1,461,270 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 13/21 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. R221Q) has been classified as Uncertain significance.

Frequency

Genomes: not found (cov: 32)

Exomes 𝑓: 0.0000021 ( 0 hom. )

Consequence

FAM78B
NM_001017961.5 missense

Scores

Clinical Significance

Not reported in ClinVar

Conservation

PhyloP100: 1.48

Publications

3 publications found

Variant links:

Genes affected

FAM78B (HGNC:13495): (family with sequence similarity 78 member B)

FAM78B links:

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ACMG classification

Classification was made for transcript

Our verdict: Uncertain_significance. The variant received 0 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

BP4

Computational evidence support a benign effect (MetaRNN=0.09053147).

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_001017961.5. You can select a different transcript below to see updated ACMG assignments.

RefSeq Transcripts

Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
FAM78B	NM_001017961.5	MANE Select	c.662G>T	p.Arg221Leu	missense	Exon 2 of 2	NP_001017961.1	Q5VT40
FAM78B	NM_001320302.2		c.264-9702G>T		intron	N/A	NP_001307231.1	F1T0K0
FAM78B	NR_135199.2		n.1415G>T		non_coding_transcript_exon	Exon 2 of 3

Ensembl Transcripts

Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
FAM78B	ENST00000354422.4	TSL:2 MANE Select	c.662G>T	p.Arg221Leu	missense	Exon 2 of 2	ENSP00000346404.3	Q5VT40
FAM78B	ENST00000338353.4	TSL:1	c.662G>T	p.Arg221Leu	missense	Exon 3 of 3	ENSP00000339681.3	Q5VT40
FAM78B	ENST00000435676.2	TSL:2	n.638G>T		non_coding_transcript_exon	Exon 2 of 3	ENSP00000412766.1	H7C3M6

Frequencies

GnomAD3 genomes

Cov.:

GnomAD2 exomes

AF:

0.00000798

AC:

AN:

250582

AF XY:

0.00000739

show subpopulations

Gnomad AFR exome

AF:

0.00

Gnomad AMR exome

AF:

0.00

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.000109

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.00

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.00000205

AC:

AN:

1461270

Hom.:

Cov.:

AF XY:

0.00000138

AC XY:

AN XY:

726862

show subpopulations

African (AFR)

AF:

0.00

AC:

AN:

33476

American (AMR)

AF:

0.00

AC:

AN:

44706

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

26074

East Asian (EAS)

AF:

0.0000756

AC:

AN:

39688

South Asian (SAS)

AF:

0.00

AC:

AN:

86166

European-Finnish (FIN)

AF:

0.00

AC:

AN:

53380

Middle Eastern (MID)

AF:

0.00

AC:

AN:

5762

European-Non Finnish (NFE)

AF:

0.00

AC:

AN:

1111652

Other (OTH)

AF:

0.00

AC:

AN:

60366

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.492

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Age Distribution

Exome Het

Variant carriers

<30

30-35

35-40

40-45

45-50

50-55

55-60

60-65

65-70

70-75

75-80

>80

Age

GnomAD4 genome

Cov.:

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.9

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Uncertain

0.42

BayesDel_addAF

Benign

-0.26

BayesDel_noAF

Benign

-0.38

CADD

Benign

(source)

DANN

Uncertain

0.99

DEOGEN2

Benign

0.055

Eigen

Benign

-0.17

Eigen_PC

Benign

0.045

FATHMM_MKL

Benign

0.53

LIST_S2

Uncertain

0.91

M_CAP

Benign

0.0016

MetaRNN

Benign

0.091

MetaSVM

Benign

-1.1

MutationAssessor

Benign

1.0

PhyloP100

1.5

PrimateAI

Uncertain

0.68

PROVEAN

Benign

-1.6

REVEL

Benign

0.048

Sift

Benign

0.80

Sift4G

Benign

0.38

Polyphen

0.0010

Vest4

0.21

MutPred

0.29

Loss of MoRF binding (P = 0.0024)

MVP

0.043

MPC

1.0

ClinPred

0.23

GERP RS

4.6

Varity_R

0.23

gMVP

0.44

Mutation Taster

=85/15

polymorphism

(source)

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

You must be logged in to view publications. This limit was set because tens of millions (!) of queries from AI bots are generated daily.

Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

Publications

ACMG classification

Variant Effect in Transcripts

RefSeq Transcripts

Ensembl Transcripts

Frequencies

Age Distribution

ClinVar

Computational scores

Splicing

Publications

Other links and lift over