chr19-45470786-A-C

Position:

• chr19-45470786-A-C

Variant summary

Our verdict is Uncertain significance. Variant got 2 ACMG points: 2P and 0B. PM2

The NM_006732.3(FOSB):​c.284A>C​(p.Asp95Ala) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant was absent in control chromosomes in GnomAD project. Variant has been reported in ClinVar as Uncertain significance (★).

• Frequency: Genomes: not found (cov: 32)
• Consequence: FOSB NM_006732.3 missense
• Clinical Significance: Uncertain significance criteria provided, single submitter U:1
• Conservation: PhyloP100: 3.00

Genes affected

FOSB (HGNC:3797): (FosB proto-oncogene, AP-1 transcription factor subunit) The Fos gene family consists of 4 members: FOS, FOSB, FOSL1, and FOSL2. These genes encode leucine zipper proteins that can dimerize with proteins of the JUN family, thereby forming the transcription factor complex AP-1. As such, the FOS proteins have been implicated as regulators of cell proliferation, differentiation, and transformation. Alternatively spliced transcript variants encoding different isoforms have been found for this gene. [provided by RefSeq, Jul 2008]

ERCC1 (HGNC:3433): (ERCC excision repair 1, endonuclease non-catalytic subunit) The product of this gene functions in the nucleotide excision repair pathway, and is required for the repair of DNA lesions such as those induced by UV light or formed by electrophilic compounds including cisplatin. The encoded protein forms a heterodimer with the XPF endonuclease (also known as ERCC4), and the heterodimeric endonuclease catalyzes the 5' incision in the process of excising the DNA lesion. The heterodimeric endonuclease is also involved in recombinational DNA repair and in the repair of inter-strand crosslinks. Mutations in this gene result in cerebrooculofacioskeletal syndrome, and polymorphisms that alter expression of this gene may play a role in carcinogenesis. Multiple transcript variants encoding different isoforms have been found for this gene. The last exon of this gene overlaps with the CD3e molecule, epsilon associated protein gene on the opposite strand. [provided by RefSeq, Oct 2009]

ACMG classification

Verdict is Uncertain_significance. Variant got 2 ACMG points.

• PM2: Very rare variant in population databases, with high coverage

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
FOSB	NM_006732.3	c.284A>C	p.Asp95Ala	missense_variant	2/4	ENST00000353609.8
FOSB	NM_001114171.2	c.284A>C	p.Asp95Ala	missense_variant	2/3
FOSB	NM_001411069.1	c.284A>C	p.Asp95Ala	missense_variant	2/5
FOSB	XM_047438550.1	c.284A>C	p.Asp95Ala	missense_variant	2/4

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
FOSB	ENST00000353609.8	c.284A>C	p.Asp95Ala	missense_variant	2/4	1	NM_006732.3	P1

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD4 exome Cov.: 31

GnomAD4 genome Cov.: 32

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

Jun 18, 2021

The c.284A>C (p.D95A) alteration is located in exon 2 (coding exon 2) of the FOSB gene. This alteration results from a A to C substitution at nucleotide position 284, causing the aspartic acid (D) at amino acid position 95 to be replaced by an alanine (A). 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	Pathogenic	0.89
BayesDel_addAF	Uncertain	0.14	D
BayesDel_noAF	Uncertain	-0.040
CADD	Uncertain	24
DANN	Uncertain	0.99
Eigen	Uncertain	0.44
Eigen_PC	Uncertain	0.40
FATHMM_MKL	Uncertain	0.90	D
LIST_S2	Uncertain	0.88	D;T;D;D;D;D;T;T;D;D
M_CAP	Uncertain	0.29	D
MetaRNN	Uncertain	0.49	T;T;T;T;T;T;T;T;T;T
MetaSVM	Uncertain	-0.045	T
MutationAssessor	Benign	1.8	L;.;L;L;.;.;.;.;.;.
MutationTaster	Benign	1.0	D;D;D;D;D;D;D;D;D;D
PrimateAI	Uncertain	0.67	T
Sift4G	Benign	0.68	T;T;T;T;T;D;T;T;T;T
Polyphen		0.99	.;.;.;D;.;.;.;.;.;.
Vest4		0.31
MutPred		0.13		Gain of glycosylation at P92 (P = 0.0879);.;Gain of glycosylation at P92 (P = 0.0879);Gain of glycosylation at P92 (P = 0.0879);.;Gain of glycosylation at P92 (P = 0.0879);Gain of glycosylation at P92 (P = 0.0879);.;.;.;
MVP		0.69
MPC		1.5
ClinPred		0.92	D
GERP RS		4.5
Varity_R		0.18
gMVP		0.71

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: rs1599888455; hg19: chr19-45974044;