rs2269575

Variant summary

Our verdict is Benign. Variant got -12 ACMG points: 0P and 12B. BP4_StrongBA1

The NM_001079539.2(XBP1):​c.-14C>T variant causes a 5 prime UTR change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0727 in 1,475,272 control chromosomes in the GnomAD database, including 6,027 homozygotes. In-silico tool predicts a benign outcome for this variant. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar.

Frequency

Genomes: 𝑓 0.12 ( 1520 hom., cov: 34)
Exomes 𝑓: 0.068 ( 4507 hom. )

Consequence

XBP1
NM_001079539.2 5_prime_UTR

Scores

2

Clinical Significance

Not reported in ClinVar

Conservation

PhyloP100: 0.00
Variant links:
Genes affected
XBP1 (HGNC:12801): (X-box binding protein 1) This gene encodes a transcription factor that regulates MHC class II genes by binding to a promoter element referred to as an X box. This gene product is a bZIP protein, which was also identified as a cellular transcription factor that binds to an enhancer in the promoter of the T cell leukemia virus type 1 promoter. It may increase expression of viral proteins by acting as the DNA binding partner of a viral transactivator. It has been found that upon accumulation of unfolded proteins in the endoplasmic reticulum (ER), the mRNA of this gene is processed to an active form by an unconventional splicing mechanism that is mediated by the endonuclease inositol-requiring enzyme 1 (IRE1). The resulting loss of 26 nt from the spliced mRNA causes a frame-shift and an isoform XBP1(S), which is the functionally active transcription factor. The isoform encoded by the unspliced mRNA, XBP1(U), is constitutively expressed, and thought to function as a negative feedback regulator of XBP1(S), which shuts off transcription of target genes during the recovery phase of ER stress. A pseudogene of XBP1 has been identified and localized to chromosome 5. [provided by RefSeq, Jul 2008]

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ACMG classification

Classification made for transcript

Verdict is Benign. Variant got -12 ACMG points.

BP4
Computational evidence support a benign effect (BayesDel_noAF=-0.77).
BA1
GnomAd4 highest subpopulation (EAS) allele frequency at 95% confidence interval = 0.265 is higher than 0.05.

Transcripts

RefSeq

Gene Transcript HGVSc HGVSp Effect #exon/exons MANE Protein UniProt
XBP1NM_001079539.2 linkuse as main transcriptc.-14C>T 5_prime_UTR_variant 1/6 ENST00000344347.6 NP_001073007.1
XBP1NM_005080.4 linkuse as main transcriptc.-14C>T 5_prime_UTR_variant 1/5 NP_005071.2

Ensembl

Gene Transcript HGVSc HGVSp Effect #exon/exons TSL MANE Protein Appris UniProt
XBP1ENST00000344347.6 linkuse as main transcriptc.-14C>T 5_prime_UTR_variant 1/65 NM_001079539.2 ENSP00000343155 P4P17861-2
XBP1ENST00000216037.10 linkuse as main transcriptc.-14C>T 5_prime_UTR_variant 1/51 ENSP00000216037 A2P17861-1
XBP1ENST00000403532.7 linkuse as main transcriptc.-14C>T 5_prime_UTR_variant 1/53 ENSP00000385162 A2
XBP1ENST00000482720.1 linkuse as main transcriptn.32C>T non_coding_transcript_exon_variant 1/22

Frequencies

GnomAD3 genomes
AF:
0.116
AC:
17696
AN:
152112
Hom.:
1514
Cov.:
34
show subpopulations
Gnomad AFR
AF:
0.227
Gnomad AMI
AF:
0.0537
Gnomad AMR
AF:
0.103
Gnomad ASJ
AF:
0.0709
Gnomad EAS
AF:
0.276
Gnomad SAS
AF:
0.0654
Gnomad FIN
AF:
0.0726
Gnomad MID
AF:
0.0764
Gnomad NFE
AF:
0.0542
Gnomad OTH
AF:
0.0970
GnomAD3 exomes
AF:
0.0885
AC:
6444
AN:
72794
Hom.:
401
AF XY:
0.0811
AC XY:
3444
AN XY:
42466
show subpopulations
Gnomad AFR exome
AF:
0.260
Gnomad AMR exome
AF:
0.151
Gnomad ASJ exome
AF:
0.0703
Gnomad EAS exome
AF:
0.281
Gnomad SAS exome
AF:
0.0576
Gnomad FIN exome
AF:
0.0699
Gnomad NFE exome
AF:
0.0552
Gnomad OTH exome
AF:
0.0763
GnomAD4 exome
AF:
0.0676
AC:
89450
AN:
1323052
Hom.:
4507
Cov.:
31
AF XY:
0.0662
AC XY:
43202
AN XY:
652586
show subpopulations
Gnomad4 AFR exome
AF:
0.232
Gnomad4 AMR exome
AF:
0.136
Gnomad4 ASJ exome
AF:
0.0630
Gnomad4 EAS exome
AF:
0.302
Gnomad4 SAS exome
AF:
0.0585
Gnomad4 FIN exome
AF:
0.0609
Gnomad4 NFE exome
AF:
0.0555
Gnomad4 OTH exome
AF:
0.0829
GnomAD4 genome
AF:
0.117
AC:
17742
AN:
152220
Hom.:
1520
Cov.:
34
AF XY:
0.116
AC XY:
8651
AN XY:
74438
show subpopulations
Gnomad4 AFR
AF:
0.227
Gnomad4 AMR
AF:
0.104
Gnomad4 ASJ
AF:
0.0709
Gnomad4 EAS
AF:
0.277
Gnomad4 SAS
AF:
0.0656
Gnomad4 FIN
AF:
0.0726
Gnomad4 NFE
AF:
0.0542
Gnomad4 OTH
AF:
0.100
Alfa
AF:
0.0285
Hom.:
21
Bravo
AF:
0.126
Asia WGS
AF:
0.186
AC:
642
AN:
3468

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.3

Name
Calibrated prediction
Score
Prediction
BayesDel_noAF
Benign
-0.77
CADD
Benign
9.1
DANN
Benign
0.65
RBP_binding_hub_radar
0.0
RBP_regulation_power_radar
1.2

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

Publications

LitVar

Below is the list of publications found by LitVar. It may be empty.

Other links and lift over

dbSNP: rs2269575; hg19: chr22-29196526; API