17-43189722-T-G

Variant summary

Our verdict is Likely benign. Variant got -2 ACMG points: 2P and 4B. PM2 BP4_Strong

The NM_005899.5(NBR1):c.615T>G(p.Phe205Leu) 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. 13/21 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: NBR1 NM_005899.5 missense
• Clinical Significance: Uncertain significance criteria provided, single submitter U:1
• Conservation: PhyloP100: -0.221

Genes affected

NBR1 (HGNC:6746): (NBR1 autophagy cargo receptor) The protein encoded by this gene was originally identified as an ovarian tumor antigen monitored in ovarian cancer. The encoded protein contains a B-box/coiled-coil motif, which is present in many genes with transformation potential. It functions as a specific autophagy receptor for the selective autophagic degradation of peroxisomes by forming intracellular inclusions with ubiquitylated autophagic substrates. This gene is located on a region of chromosome 17q21.1 that is in close proximity to the BRCA1 tumor suppressor gene. Alternative splicing of this gene results in multiple transcript variants. [provided by RefSeq, Apr 2014]

ACMG classification

Verdict is Likely_benign. Variant got -2 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• BP4: Computational evidence support a benign effect (MetaRNN=0.06587425).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
NBR1	NM_005899.5	c.615T>G	p.Phe205Leu	missense_variant	8/21	ENST00000590996.6

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
NBR1	ENST00000590996.6	c.615T>G	p.Phe205Leu	missense_variant	8/21	1	NM_005899.5	P1
NBR1	ENST00000341165.10	c.615T>G	p.Phe205Leu	missense_variant	8/21	1		P1
NBR1	ENST00000589872.1	c.615T>G	p.Phe205Leu	missense_variant	8/21	1
NBR1	ENST00000542611.5	c.552T>G	p.Phe184Leu	missense_variant	7/18	2

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD4 exome Cov.: 32

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

Jul 20, 2021

The c.615T>G (p.F205L) alteration is located in exon 8 (coding exon 7) of the NBR1 gene. This alteration results from a T to G substitution at nucleotide position 615, causing the phenylalanine (F) at amino acid position 205 to be replaced by a leucine (L). 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	Uncertain	0.40
BayesDel_addAF	Benign	-0.21	T
BayesDel_noAF	Benign	-0.54
Cadd	Benign	15
Dann	Benign	0.91
DEOGEN2	Benign	0.016	T;T;T;.
Eigen	Benign	-0.50
Eigen_PC	Benign	-0.41
FATHMM_MKL	Uncertain	0.80	D
M_CAP	Benign	0.0055	T
MetaRNN	Benign	0.066	T;T;T;T
MetaSVM	Benign	-1.1	T
MutationAssessor	Uncertain	2.2	M;.;M;M
MutationTaster	Benign	1.0	N;N;N;N;N;N
PrimateAI	Benign	0.45	T
PROVEAN	Benign	-0.10	N;N;.;.
REVEL	Benign	0.025
Sift	Benign	0.23	T;T;.;.
Sift4G	Benign	0.12	T;T;T;T
Polyphen		0.049	B;B;B;B
Vest4		0.099
MutPred		0.32		Gain of helix (P = 0.062);.;Gain of helix (P = 0.062);Gain of helix (P = 0.062);
MVP		0.30
ClinPred		0.083	T
GERP RS		0.35
RBP_binding_hub_radar		0.0
RBP_regulation_power_radar		1.1
Varity_R		0.036
gMVP		0.30

Splicing

Name	Calibrated prediction	Score	Prediction
SpliceAI score (max)		0.16		Details are displayed if max score is > 0.2

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

Publications

No publications associated with this variant yet.

Other links and lift over

hg19: chr17-41341739;