6-105078661-A-G

Variant names:

• chr6-105078661-A-G
• NM_001004317.4:c.631A>G

Variant summary

Our verdict is Uncertain significance. Variant got 0 ACMG points: 2P and 2B. PM2 BP4_Moderate

The NM_001004317.4(LIN28B):​c.631A>G​(p.Arg211Gly) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00000137 in 1,461,886 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 14/20 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)
  • Exomes 𝑓: 0.0000014 (0 hom.)
• Consequence: LIN28B NM_001004317.4 missense
• Clinical Significance: Uncertain significance criteria provided, single submitter U:1
• Conservation: PhyloP100: 2.83

Genes affected

LIN28B (HGNC:32207): (lin-28 homolog B) The protein encoded by this gene belongs to the lin-28 family, which is characterized by the presence of a cold-shock domain and a pair of CCHC zinc finger domains. This gene is highly expressed in testis, fetal liver, placenta, and in primary human tumors and cancer cell lines. It is negatively regulated by microRNAs that target sites in the 3' UTR, and overexpression of this gene in primary tumors is linked to the repression of let-7 family of microRNAs and derepression of let-7 targets, which facilitates cellular transformation. [provided by RefSeq, Jun 2012]

ACMG classification

Verdict is Uncertain_significance. Variant got 0 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• BP4: Computational evidence support a benign effect (MetaRNN=0.12134063).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
LIN28B	NM_001004317.4	c.631A>G	p.Arg211Gly	missense_variant	Exon 4 of 4	ENST00000345080.5	NP_001004317.1
LIN28B	NM_001410939.1	c.655A>G	p.Arg219Gly	missense_variant	Exon 5 of 5		NP_001397868.1
LIN28B	XM_006715477.3	c.688A>G	p.Arg230Gly	missense_variant	Exon 5 of 5		XP_006715540.2

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
LIN28B	ENST00000345080.5	c.631A>G	p.Arg211Gly	missense_variant	Exon 4 of 4	1	NM_001004317.4	ENSP00000344401.4
LIN28B	ENST00000637759.1	c.655A>G	p.Arg219Gly	missense_variant	Exon 5 of 5	5		ENSP00000490468.1
LIN28B	ENST00000635857.1	c.*59A>G		downstream_gene_variant		5		ENSP00000489735.1

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD4 exome AF: 0.00000137 AC: 2 AN: 1461886 Hom.: 0 Cov.: 32 AF XY: 0.00000138 AC XY: 1 AN XY: 727244

Gnomad4 AFR exome AF: 0.00

Gnomad4 AMR exome AF: 0.00

Gnomad4 ASJ exome AF: 0.00

Gnomad4 EAS exome AF: 0.00

Gnomad4 SAS exome AF: 0.00

Gnomad4 FIN exome AF: 0.00

Gnomad4 NFE exome AF: 0.00000180

Gnomad4 OTH exome AF: 0.00

GnomAD4 genome Cov.: 32

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

Submissions by phenotype

not specified Uncertain:1

Aug 21, 2024

Ambry Genetics

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

The c.631A>G (p.R211G) alteration is located in exon 4 (coding exon 4) of the LIN28B gene. This alteration results from a A to G substitution at nucleotide position 631, causing the arginine (R) at amino acid position 211 to be replaced by a glycine (G). 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	Benign	0.076
BayesDel_addAF	Benign	-0.084	T
BayesDel_noAF	Benign	-0.36
CADD	Benign	21
DANN	Uncertain	0.98
DEOGEN2	Benign	0.015	.;T
Eigen	Benign	-0.24
Eigen_PC	Benign	-0.22
FATHMM_MKL	Uncertain	0.88	D
LIST_S2	Uncertain	0.86	D;D
M_CAP	Benign	0.0039	T
MetaRNN	Benign	0.12	T;T
MetaSVM	Benign	-1.1	T
MutationAssessor	Benign	1.7	.;L
PrimateAI	Benign	0.37	T
PROVEAN	Benign	-0.54	.;N
REVEL	Benign	0.047
Sift	Uncertain	0.010	.;D
Sift4G	Benign	0.095	.;T
Polyphen		0.65	.;P
Vest4		0.34
MutPred		0.17		.;Gain of glycosylation at S215 (P = 0.0714);
MVP		0.29
MPC		1.1
ClinPred		0.46	T
GERP RS		3.3
Varity_R		0.090
gMVP		0.49

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

No publications associated with this variant yet.

Other links and lift over

hg19: chr6-105526536;