16-19711410-C-T

Position:

• chr16-19711410-C-T

Variant summary

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

The NM_001012991.3(KNOP1):​c.949G>A​(p.Glu317Lys) variant causes a missense change. The variant was absent in control chromosomes in GnomAD project. Variant has been reported in ClinVar as Uncertain significance (★).

• Frequency: Genomes: not found (cov: 33)
• Consequence: KNOP1 NM_001012991.3 missense
• Clinical Significance: Uncertain significance criteria provided, single submitter U:1
• Conservation: PhyloP100: 4.86

Genes affected

KNOP1 (HGNC:34404): (lysine rich nucleolar protein 1) The protein encoded by this gene is a nucleolar protein that interacts with zinc finger 106 protein. The encoded protein has several of the same characteristics as nucleostemin and may be involved in testis development. [provided by RefSeq, Feb 2017]

KNOP1 (HGNC:):

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	Protein	UniProt
KNOP1	NM_001012991.3	c.949G>A	p.Glu317Lys	missense_variant	3/5	ENST00000219837.12	NP_001013009.2

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
KNOP1	ENST00000219837.12	c.949G>A	p.Glu317Lys	missense_variant	3/5	1	NM_001012991.3	ENSP00000219837.7

Frequencies

GnomAD3 genomes Cov.: 33

GnomAD4 exome Cov.: 31

GnomAD4 genome Cov.: 33

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

Jan 22, 2024

The c.949G>A (p.E317K) alteration is located in exon 3 (coding exon 2) of the KNOP1 gene. This alteration results from a G to A substitution at nucleotide position 949, causing the glutamic acid (E) at amino acid position 317 to be replaced by a lysine (K). 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	0.57
BayesDel_addAF	Benign	-0.089	T
BayesDel_noAF	Benign	-0.37
CADD	Uncertain	26
DANN	Uncertain	1.0
DEOGEN2	Benign	0.10	T
Eigen	Benign	0.17
Eigen_PC	Benign	0.13
FATHMM_MKL	Uncertain	0.78	D
LIST_S2	Benign	0.80	T
M_CAP	Benign	0.016	T
MetaRNN	Uncertain	0.48	T
MetaSVM	Benign	-1.1	T
MutationAssessor	Benign	1.9	L
PrimateAI	Uncertain	0.68	T
PROVEAN	Benign	-2.1	N
REVEL	Benign	0.060
Sift	Benign	0.030	D
Sift4G	Benign	0.22	T
Polyphen		0.91	P
Vest4		0.59
MutPred		0.36		Gain of solvent accessibility (P = 0.012);
MVP		0.54
MPC		0.37
ClinPred		0.88	D
GERP RS		3.5
RBP_binding_hub_radar		0.0
RBP_regulation_power_radar		1.7
Varity_R		0.13
gMVP		0.051

Splicing

Name	Calibrated prediction	Score	Prediction
SpliceAI score (max)		0.070		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: chr16-19722732; COSMIC: COSV54929618; COSMIC: COSV54929618;