19-1220718-G-T

Variant names:

• chr19-1220718-G-T
• rs587782018
• NM_000455.5:c.734+1G>T

Variant summary

Our verdict is Pathogenic. The variant received 18 ACMG points: 18P and 0B. PVS1 PM2 PP5_Very_Strong

The NM_000455.5(STK11):​c.734+1G>T variant causes a splice donor, intron 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. 3/3 splice prediction tools predicting alterations to normal splicing. Variant has been reported in ClinVar as Likely pathogenic (★★).

• Frequency:
  • Genomes: not found (cov: 33)
  • Exomes 𝑓: 0.0 (0 hom.)
  • Failed GnomAD Quality Control
• Consequence: STK11 NM_000455.5 splice_donor, intron
• Scores: Splicing: ADA: 1.000
• Clinical Significance: Pathogenic/Likely pathogenic criteria provided, multiple submitters, no conflicts P:3 O:1
• Conservation: PhyloP100: 9.86
• Publications: 6 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: ClinGen, Genomics England PanelApp, G2P, Labcorp Genetics (formerly Invitae), Orphanet
• familial ovarian cancer

  Inheritance: Unknown Classification: NO_KNOWN Submitted by: ClinGen

ACMG classification

Our verdict: Pathogenic. The variant received 18 ACMG points.

• PVS1: Splicing +-2 bp (donor or acceptor) variant, LoF is a know mechanism of disease, No cryptic splice site detected. Exon removal results in frameshift change.
• PM2: Very rare variant in population databases, with high coverage
• PP5: Variant 19-1220718-G-T is Pathogenic according to our data. Variant chr19-1220718-G-T is described in ClinVar as Pathogenic/Likely_pathogenic. ClinVar VariationId is 141795.Status of the report is criteria_provided_multiple_submitters_no_conflicts, 2 stars.

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

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	STK11	NM_000455.5	MANE Select	c.734+1G>T		splice_donor intron	N/A	NP_000446.1	A0A0S2Z4D1
	STK11	NM_001407255.1		c.734+1G>T		splice_donor intron	N/A	NP_001394184.1	Q15831-2
	STK11	NR_176325.1		n.2001+1G>T		splice_donor intron	N/A

Ensembl Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	STK11	ENST00000326873.12	TSL:1 MANE Select	c.734+1G>T		splice_donor intron	N/A	ENSP00000324856.6	Q15831-1
	STK11	ENST00000652231.1		c.734+1G>T		splice_donor intron	N/A	ENSP00000498804.1	Q15831-2
	STK11	ENST00000585748.3	TSL:3	c.362+1G>T		splice_donor intron	N/A	ENSP00000477641.2	A0A087WT72

Frequencies

GnomAD3 genomes Cov.: 33

GnomAD4 exome Data not reliable, filtered out with message: AC0 AF: 0.00 AC: 0 AN: 1454148 Hom.: 0 Cov.: 32 AF XY: 0.00 AC XY: 0 AN XY: 722634

African (AFR) AF: 0.00 AC: 0 AN: 33324

American (AMR) AF: 0.00 AC: 0 AN: 44498

Ashkenazi Jewish (ASJ) AF: 0.00 AC: 0 AN: 25960

East Asian (EAS) AF: 0.00 AC: 0 AN: 39536

South Asian (SAS) AF: 0.00 AC: 0 AN: 86028

European-Finnish (FIN) AF: 0.00 AC: 0 AN: 51786

Middle Eastern (MID) AF: 0.00 AC: 0 AN: 4766

European-Non Finnish (NFE) AF: 0.00 AC: 0 AN: 1108326

Other (OTH) AF: 0.00 AC: 0 AN: 59924

GnomAD4 genome Cov.: 33

Alfa AF: 0.000348 Hom.: 0

ClinVar

ClinVar submissions as Germline

Significance: Pathogenic/Likely pathogenic

Revision: criteria provided, multiple submitters, no conflicts

Pathogenic	VUS	Benign	Condition
2	-	-	Peutz-Jeghers syndrome (2)
1	-	-	Hereditary cancer-predisposing syndrome (1)
-	-	-	Neoplasm (1)

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
BayesDel_addAF	Pathogenic	0.62	D
BayesDel_noAF	Pathogenic	0.28
CADD	Pathogenic	34
DANN	Uncertain	1.0
Eigen	Pathogenic	1.2
Eigen_PC	Pathogenic	1.1
FATHMM_MKL	Uncertain	0.96	D
PhyloP100		9.9
GERP RS		5.6
Mutation Taster		=0/100	disease causing (ClinVar)

Splicing

Name	Calibrated prediction	Score	Prediction
dbscSNV1_ADA	Pathogenic	1.0
dbscSNV1_RF	Pathogenic	0.93
Splicevardb		3.0
SpliceAI score (max)		1.0		Details are displayed if max score is > 0.2
DS_DG_spliceai		0.41		Position offset: -19
DS_DL_spliceai		1.0		Position offset: -1

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

Other links and lift over

dbSNP: rs587782018; hg19: chr19-1220717; COSMIC: COSV58819867; COSMIC: COSV58819867;