rs1057519903

Variant summary

Our verdict is Uncertain significance. Variant got 5 ACMG points: 7P and 2B. PM1PM2PM5PP2BP4_Moderate

The NM_002107.7(H3-3A):​c.83A>G​(p.Lys28Arg) variant causes a missense change involving the alteration of a conserved nucleotide. The variant was absent in control chromosomes in GnomAD project. In-silico tool predicts a benign outcome for this variant. 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. K28M) has been classified as Likely pathogenic.

Frequency

Genomes: not found (cov: 31)

Consequence

H3-3A
NM_002107.7 missense

Scores

2
6
10

Clinical Significance

Not reported in ClinVar

Conservation

PhyloP100: 9.32
Variant links:
Genes affected
H3-3A (HGNC:4764): (H3.3 histone A) Histones are basic nuclear proteins that are responsible for the nucleosome structure of the chromosomal fiber in eukaryotes. Two molecules of each of the four core histones (H2A, H2B, H3, and H4) form an octamer, around which approximately 146 bp of DNA is wrapped in repeating units, called nucleosomes. The linker histone, H1, interacts with linker DNA between nucleosomes and functions in the compaction of chromatin into higher order structures. This gene contains introns and its mRNA is polyadenylated, unlike most histone genes. The protein encoded is a replication-independent member of the histone H3 family. [provided by RefSeq, Jul 2008]

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ACMG classification

Classification made for transcript

Verdict is Uncertain_significance. Variant got 5 ACMG points.

PM1
In a hotspot region, there are 4 aminoacids with missense pathogenic changes in the window of +-8 aminoacids around while only 0 benign, 3 uncertain in NM_002107.7
PM2
Very rare variant in population databases, with high coverage;
PM5
Other missense variant is known to change same aminoacid residue: Variant chr1-226064434-A-T is described in ClinVar as [Likely_pathogenic]. Clinvar id is 376435.Status of the report is no_assertion_criteria_provided, 0 stars.
PP2
Missense variant in gene, where missense usually causes diseases (based on misZ statistic), H3-3A. . Gene score misZ 3.1568 (greater than the threshold 3.09). GenCC has associacion of gene with Bryant-Li-Bhoj neurodevelopmental syndrome 1.
BP4
Computational evidence support a benign effect (MetaRNN=0.25037754).

Transcripts

RefSeq

Gene Transcript HGVSc HGVSp Effect #exon/exons MANE UniProt
H3-3ANM_002107.7 linkuse as main transcriptc.83A>G p.Lys28Arg missense_variant 2/4 ENST00000366815.10

Ensembl

Gene Transcript HGVSc HGVSp Effect #exon/exons TSL MANE Appris UniProt
H3-3AENST00000366815.10 linkuse as main transcriptc.83A>G p.Lys28Arg missense_variant 2/41 NM_002107.7 P1

Frequencies

GnomAD3 genomes
Cov.:
31
GnomAD4 exome
Cov.:
29
GnomAD4 genome
Cov.:
31

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.3

Name
Calibrated prediction
Score
Prediction
BayesDel_addAF
Benign
-0.052
T
BayesDel_noAF
Benign
-0.31
CADD
Uncertain
25
DANN
Benign
0.97
DEOGEN2
Benign
0.023
T;T;T;T
Eigen
Uncertain
0.38
Eigen_PC
Uncertain
0.44
FATHMM_MKL
Pathogenic
0.97
D
LIST_S2
Uncertain
0.95
.;.;D;.
M_CAP
Benign
0.035
D
MetaRNN
Benign
0.25
T;T;T;T
MetaSVM
Benign
-0.41
T
MutationAssessor
Uncertain
2.6
M;M;.;M
MutationTaster
Benign
1.0
D;D;D;D
PrimateAI
Pathogenic
0.83
D
PROVEAN
Uncertain
-2.6
D;D;D;D
REVEL
Benign
0.25
Sift
Uncertain
0.0070
.;.;D;.
Sift4G
Benign
0.098
T;T;T;T
Polyphen
0.0030
B;B;D;B
Vest4
0.42
MutPred
0.24
Loss of ubiquitination at K28 (P = 0.0381);Loss of ubiquitination at K28 (P = 0.0381);Loss of ubiquitination at K28 (P = 0.0381);Loss of ubiquitination at K28 (P = 0.0381);
MVP
0.82
MPC
1.8
ClinPred
0.96
D
GERP RS
4.3
Varity_R
0.97
gMVP
0.78

Splicing

Name
Calibrated prediction
Score
Prediction
SpliceAI score (max)
0.010
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: chr1-226252135; COSMIC: COSV64731769; COSMIC: COSV64731769; API