LMO2
protein-codingLIM domain only 2, the group of LIM domain containing
Gene summary
LMO2 encodes a cysteine-rich, two LIM-domain protein that is required for yolk sac erythropoiesis. The LMO2 protein has a central and crucial role in hematopoietic development and is highly conserved. The LMO2 transcription start site is located approximately 25 kb downstream from the 11p13 T-cell translocation cluster (11p13 ttc), where a number T-cell acute lymphoblastic leukemia-specific translocations occur. Alternative splicing results in multiple transcript variants encoding different isoforms.[provided by RefSeq, Nov 2008]
- RBTNL1
MANE transcript
Inheritance
ClinVar variants
Top phenotype
gnomAD constraint
Max pathogenic AF
Genomic locus
External References & Databases
Transcript & Mutation Effects
hg38 • Region Span ~33.5 kbGenCC Phenotypes & Disease Associations
Curated gene-disease validity assertions and inheritance patterns
No GenCC data available for this gene.
ClinVar Associated Diseases & Phenotypes
Reported disease conditions connected to LMO2 variants in ClinVar
ClinVar Variants & Pathogenicity by Type
Statistics based on transcript NM_005574.4. Only rare variants are included.
We include only reliable ClinVar variants with their consequences to MANE Select, MANE Plus Clinical transcripts, or transcripts with TSL equal to 1. Click a count to filter the variants table below.
Slight differences between displayed counts and ClinVar may occur due to a different transcript/consequence chosen by our variant effect predictor, or because we classify Benign/Likely benign as Likely benign and Pathogenic/Likely pathogenic as Likely pathogenic.
| Effect | PathogenicP | Likely pathogenicLP | VUS | Likely benignLB | BenignB | Sum |
|---|---|---|---|---|---|---|
| synonymous | 1 | 1 | ||||
| missense | 39 | 1 | 40 | |||
| nonsense | 0 | |||||
| start loss | 0 | |||||
| frameshift | 0 | |||||
| splice donor/acceptor (+/-2bp) | 0 | |||||
| Total | 0 | 0 | 39 | 1 | 1 | 41 |
Transcript Catalog
Annotated transcript isoforms across RefSeq and Ensembl databases
| Transcript ID | Source | Protein ID | Coding Exons | MANE Status |
|---|---|---|---|---|
| RefSeq | NP_005565.2 | 4 | MANE Select | |
| Ensembl | ENSP00000257818.2 | 4 | MANE Select | |
| RefSeq | NP_001135787.1 | 3 | Standard | |
| RefSeq | NP_001135788.1 | 3 | Standard |
Model Organisms & Knockout Phenotypes
Observed phenotypic effects in mouse and zebrafish models
| Gene / Model | Organism | Observed Phenotype |
|---|---|---|
| lmo2 | Danio rerio | Structure: nucleate erythrocyte Quality: decreased amount abnormal |
Gene Ontology (GO) Annotations & Pathways
Biological processes, molecular functions, cellular components and pathways
Pathways ConsensusPathDB
- Transcriptional misregulation in cancer - Homo sapiens (human)
- Hematopoietic Stem Cell Differentiation
- Gene expression (Transcription)
- Generic Transcription Pathway
- RNA Polymerase II Transcription
Biological Process
- multicellular organism development
- mRNA transcription by RNA polymerase II
- positive regulation of transcription by RNA polymerase II
- cellular response to thyroid hormone stimulus
- regulation of hematopoietic stem cell differentiation
Molecular Function
- RNA polymerase II regulatory region sequence-specific DNA binding
- DNA-binding transcription factor activity, RNA polymerase II-specific
- RNA polymerase II activating transcription factor binding
- DNA-binding transcription activator activity, RNA polymerase II-specific
- protein binding
Cellular Component
- nucleoplasm
- transcription factor complex
gnomAD Constraint
Source:
- Gene type
- protein_coding
- Transcript type
- protein_coding
- Transcript
- ENST00000257818
- Coding exons
- 4
- Length
- 33715
- Individuals with no LoFs
- 125737
- Homozygous LoFs
- 0
- Heterozygous LoFs
- 8
- Defined
- 125745
- p
- 0.0000318
| Z-Score | Observed | Expected | Observed/Expected | Mutation Rate | Total Possible | |
|---|---|---|---|---|---|---|
| Missense | 1.34 | 60 | 97.3 | 0.616 | 0.00000649 | 1443 |
| Missense (PolyPhen) | 26 | 40.586 | 0.64061 | 454 | ||
| Synonymous | 0.365 | 36 | 38.9 | 0.925 | 0.00000266 | 463 |
| Loss of Function | 1.54 | 2 | 6.11 | 0.327 | 2.59e-7 | 105 |
Population LoF Frequency
| Population | CAF | p-value | Status |
|---|---|---|---|
| African | 0 | 0.0 | absent |
| Latino/Admixed American | 0 | 0.0 | absent |
| Ashkenazi Jewish | 0 | 0.0 | absent |
| East Asian | 0.00011 | 0.00011 | rare |
| Finnish | 0 | 0.0 | absent |
| European (Non-Finnish) | 0.000044 | 0.000044 | rare |
| South Asian | 0.000033 | 0.000033 | rare |
| Other | 0 | 0.0 | absent |
dbNSFP Gene Annotations
Source:
- Function
- FUNCTION: Acts with TAL1/SCL to regulate red blood cell development. Also acts with LDB1 to maintain erythroid precursors in an immature state.;
- Disease
- DISEASE: Note=A chromosomal aberration involving LMO2 may be a cause of a form of T-cell acute lymphoblastic leukemia (T-ALL). Translocation t(11,14)(p13;q11) with TCRD.;
Recessive Scores
- pRec
- 0.388
Essentials
- Essential (CRISPR)
- E
- Essential (CRISPR2)
- N
- Essential (gene trap)
- K
- Indispensability pred.
- E
- Indispensability score
- 0.806
Gene Damage Prediction
| All | Recessive | Dominant | |
|---|---|---|---|
| Mendelian | Medium | Medium | Medium |
| Primary Immunodeficiency | Medium | Medium | Medium |
| Cancer | Medium | Medium | Medium |