rs1398508098

Variant names:

• chr10-87862130-G-A
• rs1398508098
• NM_001126049.2:c.358C>T

Variant summary

Our verdict is Uncertain significance. The variant received 0 ACMG points: 2P and 2B. PM2 BP4_Moderate

The NM_001126049.2(KLLN):​c.358C>T​(p.Pro120Ser) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00000258 in 1,548,588 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 14/21 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).

• Frequency:
  • Genomes: 𝑓 0.000013 (0 hom., cov: 32)
  • Exomes 𝑓: 0.0000014 (0 hom.)
• Consequence: KLLN NM_001126049.2 missense
• Clinical Significance: Uncertain significance criteria provided, single submitter U:1
• Conservation: PhyloP100: 1.39
• Publications: 0 publications found

Genes affected

KLLN (HGNC:37212): (killin, p53 regulated DNA replication inhibitor) The protein encoded by this intronless gene is found in the nucleus, where it can inhibit DNA synthesis and promote S phase arrest coupled to apoptosis. The expression of this DNA binding protein is upregulated by transcription factor p53. [provided by RefSeq, Dec 2012]

KLLN Gene-Disease associations (from GenCC):

• Cowden disease

  Inheritance: AD Classification: SUPPORTIVE Submitted by: Orphanet
• Cowden syndrome 4

  Inheritance: Unknown Classification: NO_KNOWN Submitted by: Ambry Genetics

ACMG classification

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=0.12610999).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
KLLN	NM_001126049.2	c.358C>T	p.Pro120Ser	missense_variant	Exon 1 of 1	ENST00000445946.5	NP_001119521.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
KLLN	ENST00000445946.5	c.358C>T	p.Pro120Ser	missense_variant	Exon 1 of 1	6	NM_001126049.2	ENSP00000392204.2

Frequencies

GnomAD3 genomes AF: 0.0000131 AC: 2 AN: 152202 Hom.: 0 Cov.: 32

Gnomad AFR AF: 0.00

Gnomad AMI AF: 0.00

Gnomad AMR AF: 0.000131

Gnomad ASJ AF: 0.00

Gnomad EAS AF: 0.00

Gnomad SAS AF: 0.00

Gnomad FIN AF: 0.00

Gnomad MID AF: 0.00

Gnomad NFE AF: 0.00

Gnomad OTH AF: 0.00

GnomAD2 exomes AF: 0.00000658 AC: 1 AN: 151896 AF XY: 0.0000124

Gnomad AFR exome AF: 0.00

Gnomad AMR exome AF: 0.00

Gnomad ASJ exome AF: 0.00

Gnomad EAS exome AF: 0.00

Gnomad FIN exome AF: 0.00

Gnomad NFE exome AF: 0.00

Gnomad OTH exome AF: 0.000235

GnomAD4 exome AF: 0.00000143 AC: 2 AN: 1396386 Hom.: 0 Cov.: 31 AF XY: 0.00000291 AC XY: 2 AN XY: 688448

African (AFR) AF: 0.0000318 AC: 1 AN: 31430

American (AMR) AF: 0.00 AC: 0 AN: 35414

Ashkenazi Jewish (ASJ) AF: 0.00 AC: 0 AN: 24990

East Asian (EAS) AF: 0.00 AC: 0 AN: 35706

South Asian (SAS) AF: 0.00 AC: 0 AN: 79092

European-Finnish (FIN) AF: 0.00 AC: 0 AN: 49098

Middle Eastern (MID) AF: 0.000176 AC: 1 AN: 5678

European-Non Finnish (NFE) AF: 0.00 AC: 0 AN: 1077124

Other (OTH) AF: 0.00 AC: 0 AN: 57854

GnomAD4 genome AF: 0.0000131 AC: 2 AN: 152202 Hom.: 0 Cov.: 32 AF XY: 0.00 AC XY: 0 AN XY: 74350

African (AFR) AF: 0.00 AC: 0 AN: 41454

American (AMR) AF: 0.000131 AC: 2 AN: 15276

Ashkenazi Jewish (ASJ) AF: 0.00 AC: 0 AN: 3472

East Asian (EAS) AF: 0.00 AC: 0 AN: 5190

South Asian (SAS) AF: 0.00 AC: 0 AN: 4834

European-Finnish (FIN) AF: 0.00 AC: 0 AN: 10624

Middle Eastern (MID) AF: 0.00 AC: 0 AN: 316

European-Non Finnish (NFE) AF: 0.00 AC: 0 AN: 68032

Other (OTH) AF: 0.00 AC: 0 AN: 2092

Alfa AF: 0.00 Hom.: 0

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

Submissions by phenotype

not specified Uncertain:1

Apr 03, 2025

Ambry Genetics

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

The c.358C>T (p.P120S) alteration is located in exon 1 (coding exon 1) of the KLLN gene. This alteration results from a C to T substitution at nucleotide position 358, causing the proline (P) at amino acid position 120 to be replaced by a serine (S). 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	0.20
BayesDel_addAF	Benign	-0.040	T
BayesDel_noAF	Benign	-0.30
CADD	Benign	17
DANN	Uncertain	1.0
DEOGEN2	Benign	0.047	T
Eigen	Benign	-0.17
Eigen_PC	Benign	-0.24
FATHMM_MKL	Benign	0.14	N
M_CAP	Benign	0.0037	T
MetaRNN	Benign	0.13	T
MetaSVM	Benign	-1.1	T
MutationAssessor	Benign	0.0	N
PhyloP100		1.4
PrimateAI	Benign	0.32	T
PROVEAN	Pathogenic	-5.0	D
REVEL	Benign	0.13
Sift	Benign	0.15	T
Sift4G	Benign	0.35	T
Polyphen		0.96	D
Vest4		0.082
MutPred		0.11		Gain of phosphorylation at P120 (P = 0.0502);
MVP		0.095
ClinPred		0.47	T
GERP RS		4.1
Varity_R		0.18
gMVP		0.0074
Mutation Taster		=96/4	polymorphism

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

Other links and lift over

dbSNP: rs1398508098; hg19: chr10-89621887;