Genetic Variant NM_033360.4:c.*4185_*4187delAAA (chr12-25205728-CTTT-C) – ACMG Classification: Uncertain_significance (2 pts)

Variant summary

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

The NM_033360.4(KRAS):c.*4185_*4187delAAA variant causes a 3 prime UTR change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0000136 in 220,546 control chromosomes in the GnomAD database, with no homozygous occurrence. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar.

Frequency

Genomes: 𝑓 0.0000066 ( 0 hom., cov: 0)

Exomes 𝑓: 0.000029 ( 0 hom. )

Consequence

KRAS
NM_033360.4 3_prime_UTR

Scores

Not classified

Clinical Significance

Not reported in ClinVar

Conservation

PhyloP100: 1.12

Publications

1 publications found

Variant links:

Genes affected

KRAS (HGNC:6407): (KRAS proto-oncogene, GTPase) This gene, a Kirsten ras oncogene homolog from the mammalian ras gene family, encodes a protein that is a member of the small GTPase superfamily. A single amino acid substitution is responsible for an activating mutation. The transforming protein that results is implicated in various malignancies, including lung adenocarcinoma, mucinous adenoma, ductal carcinoma of the pancreas and colorectal carcinoma. Alternative splicing leads to variants encoding two isoforms that differ in the C-terminal region. [provided by RefSeq, Jul 2008]

KRAS links:

ETFRF1 (HGNC:27052): (electron transfer flavoprotein regulatory factor 1) Involved in respiratory electron transport chain. Located in mitochondrion. [provided by Alliance of Genome Resources, Apr 2022]

ETFRF1 links:

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ACMG classification

Classification was made for transcript

Our verdict: Uncertain_significance. The variant received 2 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_033360.4. You can select a different transcript below to see updated ACMG assignments.

RefSeq Transcripts

Gene	Transcript	Tags	HGVSc	Effect	Exon Rank	Protein	UniProt
KRAS	NM_033360.4	MANE Plus Clinical	c.4185_4187delAAA	3_prime_UTR	Exon 6 of 6	NP_203524.1	P01116-1
KRAS	NM_004985.5	MANE Select	c.4064_4066delAAA	3_prime_UTR	Exon 5 of 5	NP_004976.2
KRAS	NM_001369786.1		c.4185_4187delAAA	3_prime_UTR	Exon 6 of 6	NP_001356715.1	P01116-1

Ensembl Transcripts

Gene	Transcript	Tags	HGVSc	Effect	Exon Rank	Protein	UniProt
KRAS	ENST00000256078.10	TSL:1 MANE Plus Clinical	c.4185_4187delAAA	3_prime_UTR	Exon 6 of 6	ENSP00000256078.5	P01116-1
KRAS	ENST00000311936.8	TSL:1 MANE Select	c.4064_4066delAAA	3_prime_UTR	Exon 5 of 5	ENSP00000308495.3	P01116-2
KRAS	ENST00000685328.1		c.4064_4066delAAA	3_prime_UTR	Exon 5 of 5	ENSP00000508921.1	P01116-2

Frequencies

GnomAD3 genomes

AF:

0.00000659

AC:

AN:

151636

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.00

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.0000657

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

GnomAD4 exome

AF:

0.0000290

AC:

AN:

68910

Hom.:

AF XY:

0.00

AC XY:

AN XY:

31892

show subpopulations

African (AFR)

AF:

0.00

AC:

AN:

3376

American (AMR)

AF:

0.000482

AC:

AN:

2076

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

4334

East Asian (EAS)

AF:

0.00

AC:

AN:

9748

South Asian (SAS)

AF:

0.00

AC:

AN:

594

European-Finnish (FIN)

AF:

0.00

AC:

AN:

Middle Eastern (MID)

AF:

0.00

AC:

AN:

432

European-Non Finnish (NFE)

AF:

0.0000235

AC:

AN:

42528

Other (OTH)

AF:

0.00

AC:

AN:

5762

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.450

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

GnomAD4 genome

AF:

0.00000659

AC:

AN:

151636

Hom.:

Cov.:

AF XY:

0.0000135

AC XY:

AN XY:

74016

show subpopulations

African (AFR)

AF:

0.00

AC:

AN:

41290

American (AMR)

AF:

0.0000657

AC:

AN:

15222

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

3468

East Asian (EAS)

AF:

0.00

AC:

AN:

5174

South Asian (SAS)

AF:

0.00

AC:

AN:

4824

European-Finnish (FIN)

AF:

0.00

AC:

AN:

10496

Middle Eastern (MID)

AF:

0.00

AC:

AN:

316

European-Non Finnish (NFE)

AF:

0.00

AC:

AN:

67852

Other (OTH)

AF:

0.00

AC:

AN:

2084

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.425

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Age Distribution

Genome Het

Variant carriers

<30

30-35

35-40

40-45

45-50

50-55

55-60

60-65

65-70

70-75

75-80

>80

Age

Alfa

AF:

0.00

Hom.:

1051

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.9

Name

Calibrated prediction

Score

Prediction

PhyloP100

1.1

Splicing

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

Publications

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NM_033360.4:c.4185_4187delAAA

Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

Publications

ACMG classification

Variant Effect in Transcripts

RefSeq Transcripts

Ensembl Transcripts

Frequencies

Age Distribution

ClinVar

Computational scores

Splicing

Publications

Other links and lift over