19-1222987-G-C

Variant names:

• chr19-1222987-G-C
• rs864622488
• NM_000455.5:c.923G>C

Variant summary

Our verdict is Pathogenic. The variant received 10 ACMG points: 10P and 0B. PM1 PM2 PM5 PP3_Strong

The NM_000455.5(STK11):​c.923G>C​(p.Trp308Ser) variant causes a missense, splice region change involving the alteration of a conserved nucleotide. The variant was absent in control chromosomes in GnomAD project. In-silico tool predicts a pathogenic outcome for this variant. 13/22 in silico tools predict a damaging outcome for this variant. 1/1 splice prediction tools predict no significant impact on normal splicing. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar. Another variant affecting the same amino acid position, but resulting in a different missense (i.e. W308C) has been classified as Pathogenic.

• Frequency: Genomes: not found (cov: 33)
• Consequence: STK11 NM_000455.5 missense, splice_region
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: 9.60
• Publications: 0 publications found

Genes affected

STK11 (HGNC:11389): (serine/threonine kinase 11) The protein encoded by this gene is a serine/threonine kinase that regulates cell polarity and energy metabolism and functions as a tumor suppressor. Mutations in this gene have been associated with the autosomal dominant Peutz-Jeghers syndrome, as well as with skin, pancreatic, and testicular cancers. [provided by RefSeq, May 2022]

STK11 Gene-Disease associations (from GenCC):

• familial pancreatic carcinoma

  Inheritance: AD Classification: DEFINITIVE Submitted by: G2P
• Peutz-Jeghers syndrome

  Inheritance: AD Classification: DEFINITIVE, STRONG, SUPPORTIVE Submitted by: Labcorp Genetics (formerly Invitae), ClinGen, Orphanet, Genomics England PanelApp, G2P
• familial ovarian cancer

  Inheritance: AD Classification: NO_KNOWN Submitted by: ClinGen

ACMG classification

Our verdict: Pathogenic. The variant received 10 ACMG points.

• PM1: In a hotspot region, there are 7 aminoacids with missense pathogenic changes in the window of +-8 aminoacids around while only 4 benign, 41 uncertain in NM_000455.5
• PM2: Very rare variant in population databases, with high coverage
• PM5: Other missense variant is known to change same aminoacid residue: Variant chr19-1222988-G-T is described in ClinVar as Pathogenic. ClinVar VariationId is 2736757.Status of the report is criteria_provided_multiple_submitters_no_conflicts, 2 stars.
• PP3: MetaRNN computational evidence supports a deleterious effect, 0.982

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_000455.5. You can select a different transcript below to see updated ACMG assignments.

RefSeq Transcripts

Selected	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	STK11	NM_000455.5	MANE Select	c.923G>C	p.Trp308Ser	missense splice_region	Exon 8 of 10	NP_000446.1
	STK11	NM_001407255.1		c.923G>C	p.Trp308Ser	missense splice_region	Exon 8 of 9	NP_001394184.1
	STK11	NR_176325.1		n.2190G>C		splice_region non_coding_transcript_exon	Exon 9 of 11

Ensembl Transcripts

Selected	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	STK11	ENST00000326873.12	TSL:1 MANE Select	c.923G>C	p.Trp308Ser	missense splice_region	Exon 8 of 10	ENSP00000324856.6
	STK11	ENST00000652231.1		c.923G>C	p.Trp308Ser	missense splice_region	Exon 8 of 9	ENSP00000498804.1
	STK11	ENST00000585748.3	TSL:3	c.551G>C	p.Trp184Ser	missense splice_region	Exon 10 of 12	ENSP00000477641.2

Frequencies

GnomAD3 genomes Cov.: 33

GnomAD4 exome Cov.: 31

GnomAD4 genome Cov.: 33

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Pathogenic	0.99
BayesDel_addAF	Pathogenic	0.37	D
BayesDel_noAF	Pathogenic	0.30
CADD	Pathogenic	33
DANN	Uncertain	0.99
DEOGEN2	Benign	0.40	T
Eigen	Pathogenic	0.77
Eigen_PC	Uncertain	0.62
FATHMM_MKL	Uncertain	0.87	D
LIST_S2	Uncertain	0.93	D
M_CAP	Pathogenic	0.53	D
MetaRNN	Pathogenic	0.98	D
MetaSVM	Uncertain	0.38	D
MutationAssessor	Pathogenic	3.2	M
PhyloP100		9.6
PrimateAI	Pathogenic	0.82	D
PROVEAN	Pathogenic	-13	D
REVEL	Pathogenic	0.92
Sift	Pathogenic	0.0	D
Sift4G	Uncertain	0.0030	D
Polyphen		1.0	D
Vest4		0.88
MutPred		0.86		Gain of disorder (P = 0.0223)
MVP		0.77
MPC		0.35
ClinPred		1.0	D
GERP RS		3.5
PromoterAI		-0.027	Neutral
RBP_binding_hub_radar		0.0
RBP_regulation_power_radar		1.7
Varity_R		1.0
gMVP		0.96
Mutation Taster		=0/100	disease causing

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: rs864622488; hg19: chr19-1222986;