LAMA1

gene
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Summary

LAMA1 (laminin subunit alpha 1, HGNC:6481) is a protein-coding gene on chromosome 18p11.31, encoding Laminin subunit alpha-1 (P25391). Binding to cells via a high affinity receptor, laminin is thought to mediate the attachment, migration and organization of cells into tissues during embryonic development by interacting with other extracellular matrix components.

This gene encodes one of the alpha 1 subunits of laminin. The laminins are a family of extracellular matrix glycoproteins that have a heterotrimeric structure consisting of an alpha, beta and gamma chain. These proteins make up a major component of the basement membrane and have been implicated in a wide variety of biological processes including cell adhesion, differentiation, migration, signaling, neurite outgrowth and metastasis. Mutations in this gene may be associated with Poretti-Boltshauser syndrome.

Source: NCBI Gene 284217 — RefSeq curated summary.

At a glance

  • Gene–disease (curated): ataxia - intellectual disability - oculomotor apraxia - cerebellar cysts syndrome (Definitive, GenCC)
  • GWAS associations: 7
  • Clinical variants (ClinVar): 1,746 total — 81 pathogenic, 42 likely-pathogenic
  • Phenotypes (HPO): 30
  • Druggable target: yes
  • Dosage sensitivity (ClinGen): haploinsufficiency autosomal recessive, triplosensitivity no evidence
  • MANE Select transcript: NM_005559

Identifiers

Gene identifiers

FieldValue
HGNC IDHGNC:6481
Approved symbolLAMA1
Namelaminin subunit alpha 1
Location18p11.31
Locus typegene with protein product
StatusApproved
Ensembl geneENSG00000101680
Ensembl biotypeprotein_coding
OMIM150320
Entrez284217

Gene structure

Transcript identifiers

Ensembl transcripts: 12 — 7 retained_intron, 5 protein_coding

ENST00000389658, ENST00000484335, ENST00000488064, ENST00000488089, ENST00000490190, ENST00000492048, ENST00000579014, ENST00000585178, ENST00000940200, ENST00000940201, ENST00000940202, ENST00000940203

RefSeq mRNA: 1 — MANE Select: NM_005559 NM_005559

CCDS: CCDS32787

Canonical transcript exons

ENST00000389658 — 63 exons

ExonStartEnd
ENSE0000149713971176607117797
ENSE0000150656770421457042250
ENSE0000150656870432277043405
ENSE0000194664869417426942239
ENSE0000345979769852376985400
ENSE0000345983769619456962059
ENSE0000346006070071397007276
ENSE0000346061070400767040236
ENSE0000346073269781966978378
ENSE0000346265469471636947296
ENSE0000347027169824976982590
ENSE0000347144269977426997884
ENSE0000348179670490787049257
ENSE0000348747670102007010385
ENSE0000349007570113007011479
ENSE0000350311170375787037751
ENSE0000350532569431806943402
ENSE0000350594469749036975036
ENSE0000350771970022647002385
ENSE0000351064769566366956765
ENSE0000351476569553536955465
ENSE0000352809669730576973207
ENSE0000353175770799757080087
ENSE0000353213670359877036088
ENSE0000353441870138157014051
ENSE0000353930670462787046367
ENSE0000354504469777276977881
ENSE0000354991069593416959492
ENSE0000356112369805216980637
ENSE0000356154570388107038950
ENSE0000356423170802877080457
ENSE0000356517069861376986347
ENSE0000356948569491016949259
ENSE0000357211669759376976080
ENSE0000357403169999116999997
ENSE0000358200469718576971981
ENSE0000358507769994456999638
ENSE0000358519069652886965432
ENSE0000358855770164917016671
ENSE0000359011369936416993752
ENSE0000359244769484036948556
ENSE0000359970470259797026106
ENSE0000360860670157227015858
ENSE0000361016469615866961759
ENSE0000361111270172787017384
ENSE0000361173669584776958662
ENSE0000361657170092397009366
ENSE0000362257669830996983234
ENSE0000362833570084887008608
ENSE0000363075969507826950971
ENSE0000364264670119957012138
ENSE0000365289770447227044839
ENSE0000365303269855276985643
ENSE0000365819670320667032176
ENSE0000366158570243807024466
ENSE0000366383369661476966297
ENSE0000366645170506947050936
ENSE0000366676769925616992720
ENSE0000366832970344797034690
ENSE0000367030670329847033095
ENSE0000367078670231647023375
ENSE0000367238469953576995446
ENSE0000369468269646626964803

Expression profiles

Bgee: expression breadth ubiquitous, 171 present calls, max score 91.82.

FANTOM5 (CAGE): breadth broad, TPM avg 5.3685 / max 205.1486, expressed in 700 samples.

FANTOM5 promoters (3 alternative TSS)

Promoter IDTPM avgSamples expressed
1711523.6429632
1711531.1751438
1711510.5506239

Top tissues by expression

259 total, by Bgee expression score (0-100, higher = more expressed):

TissueAnatomy IDExpression scoreQuality
ventricular zoneUBERON:000305391.82gold quality
right testisUBERON:000453488.39gold quality
left testisUBERON:000453387.93gold quality
ileal mucosaUBERON:000033187.08gold quality
testisUBERON:000047385.56gold quality
primordial germ cell in gonadCL:0000670 ∩ UBERON:000099185.36gold quality
stromal cell of endometriumCL:000225585.32gold quality
male germ line stem cell (sensu Vertebrata) in testisCL:0000089 ∩ UBERON:000047383.46gold quality
ganglionic eminenceUBERON:000402383.30gold quality
metanephros cortexUBERON:001053383.20gold quality
colonic mucosaUBERON:000031779.48gold quality
mucosa of sigmoid colonUBERON:000499377.82gold quality
rectumUBERON:000105277.47gold quality
left lobe of thyroid glandUBERON:000112076.88gold quality
metanephrosUBERON:000008175.61gold quality
mucosa of transverse colonUBERON:000499175.58gold quality
thyroid glandUBERON:000204675.25gold quality
right lobe of thyroid glandUBERON:000111975.01gold quality
body of pancreasUBERON:000115073.83gold quality
adult mammalian kidneyUBERON:000008272.27gold quality
jejunal mucosaUBERON:000039972.20gold quality
caudate nucleusUBERON:000187372.20gold quality
left ovaryUBERON:000211972.18gold quality
cortex of kidneyUBERON:000122571.68gold quality
putamenUBERON:000187471.28gold quality
nucleus accumbensUBERON:000188270.32gold quality
duodenumUBERON:000211470.09gold quality
adenohypophysisUBERON:000219669.97gold quality
pituitary glandUBERON:000000769.92gold quality
ovaryUBERON:000099269.90gold quality

Single-cell (SCXA)

Detected in 4 experiment(s), a significant marker in 4.

ExperimentMarker?Max mean expression
E-GEOD-125970yes23.60
E-MTAB-9388yes11.95
E-ANND-3yes8.18
E-MTAB-8271yes6.62

Regulation

Is transcription factor: no

Upstream regulators (CollecTRI, top): ESR1, GATA6, KLF4, KLF5, KLF6, SOX17, SOX7, SP1, SP3, YY1

miRNA regulators (miRDB)

48 targeting LAMA1, top 30 by miRDB confidence (max_score; target_count = how many genes the miRNA targets in total — lower means more specific):

miRNAMax scoreAvg scoremiRNA target_count
HSA-MIR-3646100.0073.565283
HSA-MIR-4262100.0073.263931
HSA-MIR-3689D100.0066.141181
HSA-MIR-6851-5P100.0065.631294
HSA-MIR-4682100.0068.891258
HSA-MIR-181A-5P99.9972.962995
HSA-MIR-181B-5P99.9972.972996
HSA-MIR-181C-5P99.9972.952996
HSA-MIR-181D-5P99.9973.042997
HSA-MIR-371B-5P99.9975.344759
HSA-MIR-511-3P99.9968.851467
HSA-MIR-373-5P99.9875.364753
HSA-MIR-616-5P99.9875.584775
HSA-MIR-480399.9871.993117
HSA-MIR-589-3P99.9169.622088
HSA-MIR-129799.9173.413162
HSA-MIR-202-3P99.8471.411290
HSA-MIR-469899.8471.414303
HSA-MIR-26A-5P99.7873.522303
HSA-MIR-26B-5P99.7873.512305
HSA-MIR-451799.7669.191867
HSA-MIR-808499.7369.571760
HSA-MIR-446599.7172.562096
HSA-MIR-509399.6769.262291
HSA-MIR-54399.5269.032595
HSA-MIR-122B-5P99.4670.811457
HSA-MIR-377-3P99.3770.181905
HSA-MIR-145-3P99.3367.66764
HSA-MIR-5589-3P99.2968.301443
HSA-MIR-397899.2468.392201

Functional genomics

ClinGen dosage: haploinsufficiency 30 (autosomal recessive), triplosensitivity 0 (no evidence). ClinGen Gene Dosage Map

Literature-anchored findings (GeneRIF, showing 37)

  • Exposure of cryptic domains in the alpha 1-chain of laminin-1 by elastase stimulates macrophages urokinase and matrix metalloproteinase-9 expression. (PMID:11827968)
  • Alpha 1 laminin was heavily over-expressed in Alzheimer disease frontal cortex, and localized in reactive astrocytes of the grey and white matter, and as punctate deposits in the senile placques of the Alzheimer brain tissue. (PMID:12111806)
  • Laminins with alpha1, alpha4, and alpha5 chains are compared to determine laminin isoform-specific promotion of adhesion and migration of human bone marrow progenitor cells. (PMID:12393739)
  • mRNA encoding laminin-alpha1, -beta1, and -gamma1 chains was expressed in 90% of endometriotic lesions. (PMID:12615822)
  • adhesion to laminin-1 through alpha6-integrin represents a protective mechanism for melanocytes to withstand UVB damage (PMID:15885076)
  • analysis of structure and activities reveal differences in laminin G-like domain interactions that should enable dissection of biological roles of different laminin ligands (PMID:17307732)
  • analysis of how distinct acidic clusters and hydrophobic residues in the alternative splice domains X1 and X2 of alpha7 integrins define specificity for laminin isoforms (PMID:17618648)
  • Real-time PCR showed that ETOH significantly altered the expression of genes involved in cell adhesion. There was an increase in the expression of alpha and beta Laminins 1, beta Integrins 3 and 5, Secreted phosphoprotein1 and Sarcoglycan epsilon. (PMID:18162078)
  • Subepicardial localization of CD117-positive cells and expression of laminin-1 and alpha(6) integrin subunits may all correspond to the activation of regeneration involving an epithelial-mesenchymal transition in adult heart (PMID:18436868)
  • The laminin and laminin gene expression was higher in the aganglionic segment than in the dilated segment, and the expression decreased stepwisely from the aganglionic segment to the normal segment. (PMID:18661771)
  • laminin-111 (alpha(1), beta(1), gamma(1)), which is expressed during embryonic development but absent in normal or dystrophic skeletal muscle, increased alpha(7)-integrin expression in mouse and DMD patient myoblasts (PMID:19416897)
  • These results identify a previously undescribed role of carbohydrate-dependent cell-basement membrane interaction in tumor suppression and its control by beta3GnT1 and LARGE. (PMID:19587235)
  • Promoter -1030C/T polymorphism of LMNA is a possible genetic predisposition to arterial stiffness in the Japanese population (PMID:19672032)
  • Abnormal distribution of laminin alpha1 and laminin alpha5 in glomerular basement membrane is correlated with GBM thickening and splitting in human Alport’s syndrome. (PMID:20019771)
  • Laminin-derived peptide AG73 regulates migration, invasion, and protease activity of human oral squamous cell carcinoma cells through syndecan-1 and beta1 integrin. (PMID:20237901)
  • The polymorphism of SNP rs2089760, located in the promoter region of LAMA1, may be associated with high myopia in the Chinese population. (PMID:21541277)
  • c-Jun/AP-1 activity mediated by JNK, PI3K/Akt and ERK pathways is required for laminin-1-induced neurite outgrowth in human bone marrow mesenchymal stem cells. (PMID:21570970)
  • Laminin-alpha1 LG4-5 domain binding to dystroglycan mediates muscle cell survival, growth, and the AP-1 and NF-kappaB transcription factors but also has adverse effects. (PMID:22159078)
  • we report associations with the LAMA1 and HMG20A (not previously associated at genome-wide significance in Europeans) gene regions with type 2 diabetes risk (PMID:22693455)
  • miR-9 negatively controls lamin A and progerin expression in neural cells. (PMID:22840390)
  • Studies indicate that progenitor endothelial cells (ECs), endothelial colony-forming cells (ECFCs), deposit collagen IV, fibronectin, and laminin. (PMID:22919069)
  • skin-processed peptides play role in wound healing and antimicrobial response (PMID:24458132)
  • Identification of biallelic mutations in LAMA1 as the cause of cerebellar dysplasia with cysts in seven affected individuals. (PMID:25105227)
  • Our results indicate that invasion of cervical cancer is accomplished by the remodeling of the interstitial stroma, which process includes decrease and partial replacement of fibronectin and collagens by a laminin-rich matrix (PMID:25885552)
  • Novel PMCA3 missense mutation co-occurring with a heterozygous mutation in LAMA1 impaired cellular Ca2+ homeostasis in patients with Cerebellar Ataxia. (PMID:25953895)
  • Studies of the hLM alpha-1N C49S mutant show that this mutation causes enhanced self-association behavior, which can explain the inability of laminin bearing this mutation to fulfill functional roles in vivo. (PMID:26215696)
  • LAMA1 SNP rs2089760 plays an important role in the development of PM. (PMID:26862816)
  • Sixteen novel LAMA1 variants were identified in fourteen families with Poretti-Boltshauser syndrome. The frameshift variant c.[2935delA] recurred in six unrelated families on a shared haplotype, suggesting a founder effect. (PMID:26932191)
  • Taken together, these findings suggest that miR-202 may function as a novel tumor suppressor in ESCC by repressing cell proliferation and migration, and its biological effects may attribute the inhibition of LAMA1-mediated FAK-PI3K-Akt signaling. (PMID:27045085)
  • LAMA1 deficiency can lead to alteration in cytoskeletal dynamics, which may invariably lead to alteration in dendrite growth and axonal formation. Patient-derived fibroblasts have impaired adhesion, reduced migration, abnormal morphology and increased apoptosis due to impaired activation of Cdc42, a member of the Rho family of GTPases that is involved in cytoskeletal dynamics. (PMID:27095636)
  • Laminins are involved in genetic and acquired bullous dermatoses, and collagenoses. (PMID:27464450)
  • We report here a severe defect of neuromuscular transmission in a consanguineous patient with a homozygous variant in the laminin alpha-5 subunit gene (LAMA5). The variant c.8046C>T (p.Arg2659Trp) is rare and has a predicted deleterious effect. The affected individual, who also carries a rare homozygous sequence variant in LAMA1, had muscle weakness, myopia, and facial tics (PMID:28544784)
  • intrinsic interaction between AG73 in the tumor environment and the proteoglycan receptors Sdcs on breast cancer cells in supporting tumor cell adhesion and invasion through filopodia, is an important step in cancer metastasis. (PMID:31183318)
  • Organisation of extracellular matrix proteins laminin and agrin in pericapillary basal laminae in mouse brain. (PMID:32072250)
  • Spermatogonia Loss Correlates with LAMA 1 Expression in Human Prepubertal Testes Stored for Fertility Preservation. (PMID:33513766)
  • Circular RNA hsa_circ_0000277 sequesters miR-4766-5p to upregulate LAMA1 and promote esophageal carcinoma progression. (PMID:34226522)
  • Variability of retinopathy consequent upon novel mutations in LAMA1. (PMID:35616092)

Cross-species orthologs

3 orthologs

OrganismSymbolGene ID
danio_reriolama1ENSDARG00000102277
mus_musculusLama1ENSMUSG00000032796
rattus_norvegicusLama1ENSRNOG00000017237

Paralogs (27): USH2A (ENSG00000042781), LAMC3 (ENSG00000050555), LAMA3 (ENSG00000053747), LAMC2 (ENSG00000058085), NTN1 (ENSG00000065320), NTN4 (ENSG00000074527), ATRN (ENSG00000088812), LAMB4 (ENSG00000091128), LAMB1 (ENSG00000091136), MEGF8 (ENSG00000105429), MEGF9 (ENSG00000106780), ATRNL1 (ENSG00000107518), LAMA4 (ENSG00000112769), LAMA5 (ENSG00000130702), LAMC1 (ENSG00000135862), NTN5 (ENSG00000142233), HSPG2 (ENSG00000142798), TMEFF2 (ENSG00000144339), NTN3 (ENSG00000162068), NTNG1 (ENSG00000162631), EGFLAM (ENSG00000164318), LAMB2 (ENSG00000172037), AGRN (ENSG00000188157), NTNG2 (ENSG00000196358), LAMA2 (ENSG00000196569), LAMB3 (ENSG00000196878), TMEFF1 (ENSG00000241697)

Protein

Protein identifiers

Laminin subunit alpha-1P25391 (reviewed: P25391)

Alternative names: Laminin A chain, Laminin-1 subunit alpha, Laminin-3 subunit alpha, S-laminin subunit alpha

All UniProt accessions (1): P25391

UniProt curated annotations — full annotation on UniProt →

Function. Binding to cells via a high affinity receptor, laminin is thought to mediate the attachment, migration and organization of cells into tissues during embryonic development by interacting with other extracellular matrix components. As a ligand for alpha-dystroglycan, it is involved in a number of processes including epithelium branching morphogenesis, down-regulation of apoptotic signals in muscle via the activation of PI3K/AKT signaling, and activation of RAC1 signaling. As a subunit of laminin-1 (also known as laminin-111 or EHS laminin), it is involved in the stimulation of agrin-induced receptor clustering through a MuSK-independent pathway.

Subunit / interactions. Laminin is a complex glycoprotein, consisting of three different polypeptide chains (alpha, beta, gamma), which are bound to each other by disulfide bonds into a cross-shaped molecule comprising one long and three short arms with globules at each end. Alpha-1 is a subunit of laminin-1 (laminin-111 or EHS laminin) and laminin-3 (laminin-121 or S-laminin). Interacts with alpha-dystroglycan; the interaction is required for a number of processes including epithelium branching morphogenesis, and down-regulation of apoptotic signals in muscle via the activation of PI3K/AKT signaling.

Subcellular location. Secreted. Extracellular space. Extracellular matrix. Basement membrane.

Post-translational modifications. Tyrosine phosphorylated by PKDCC/VLK.

Disease relevance. Poretti-Boltshauser syndrome (PTBHS) [MIM:615960] An autosomal recessive disorder characterized by cerebellar dysplasia, cerebellar vermis atrophy, cerebellar cysts in most patients, high myopia, variable retinal dystrophy, and eye movement abnormalities including strabismus, ocular apraxia, nystagmus. Affected individuals have ataxia, delayed motor development, language impairment, and intellectual disability with variable severity. The disease is caused by variants affecting the gene represented in this entry.

Domain organisation. The alpha-helical domains I and II are thought to interact with other laminin chains to form a coiled coil structure. Domains VI, IV and G are globular.

RefSeq proteins (1): NP_005550* (*=MANE)

Domains & families (InterPro)

IDNameType
IPR000034Laminin_IVDomain
IPR000742EGFDomain
IPR001791Laminin_GDomain
IPR002049LE_domDomain
IPR008211Laminin_NDomain
IPR009254Laminin_aIDomain
IPR010307Laminin_dom_IIDomain
IPR013320ConA-like_dom_sfHomologous_superfamily
IPR050440Laminin/Netrin_ECMFamily
IPR056863LMN_ATRN_NET-like_EGFDomain

Pfam: PF00052, PF00053, PF00054, PF00055, PF06008, PF06009, PF24973

UniProt features (131 total): disulfide bond 67, domain 27, sequence variant 13, sequence conflict 13, glycosylation site 6, signal peptide 1, chain 1, region of interest 1, coiled-coil region 1, short sequence motif 1

Structure

Experimental structures (PDB)

0 structures.

Predicted structure (AlphaFold)

No AlphaFold model available for P25391 — AlphaFold DB does not currently provide models for proteins above ~3000 aa.

Functional residue map

Curated UniProt residues grouped by drug-discovery relevance — catalytic, ligand-binding, modification, and mutation-validated positions. Source: UniProtKB sequence features.

Disulfide bonds (67): 2271–2297, 2457–2481, 2646–2673, 2860–2885, 3039–3070, 270–279, 272–290, 292–301, 304–324, 327–336, 329–361, 364–373, 376–394, 397–409, 399–427, 429–438, 441–451, 454–467, 456–471, 473–482 …

Glycosylation sites (6): 665, 1579, 1689, 1717, 2047, 2243

Function

Pathways and Gene Ontology

Reactome pathways

16 pathways

IDPathway
R-HSA-3000157Laminin interactions
R-HSA-3000171Non-integrin membrane-ECM interactions
R-HSA-3000178ECM proteoglycans
R-HSA-373760L1CAM interactions
R-HSA-8874081MET activates PTK2 signaling
R-HSA-9638630Attachment of bacteria to epithelial cells
R-HSA-9913351Formation of the dystrophin-glycoprotein complex (DGC)
R-HSA-9925563Developmental Lineage of Pancreatic Ductal Cells
R-HSA-1266738Developmental Biology
R-HSA-1474244Extracellular matrix organization
R-HSA-162582Signal Transduction
R-HSA-422475Axon guidance
R-HSA-6806834Signaling by MET
R-HSA-8875878MET promotes cell motility
R-HSA-9006934Signaling by Receptor Tyrosine Kinases
R-HSA-9675108Nervous system development

MSigDB gene sets: 306 (showing top): GSE45365_CTRL_VS_MCMV_INFECTION_NK_CELL_UP, GOBP_NEUROMUSCULAR_JUNCTION_DEVELOPMENT, GOBP_MORPHOGENESIS_OF_AN_EPITHELIUM, CREL_01, MYAATNNNNNNNGGC_UNKNOWN, GOBP_EPITHELIUM_DEVELOPMENT, GOBP_ESTABLISHMENT_OR_MAINTENANCE_OF_MONOPOLAR_CELL_POLARITY, GOBP_GLAND_MORPHOGENESIS, GOBP_ESTABLISHMENT_OR_MAINTENANCE_OF_CELL_POLARITY, GOBP_SALIVARY_GLAND_DEVELOPMENT, GOBP_ESTABLISHMENT_OF_EPITHELIAL_CELL_POLARITY, GOBP_EPITHELIAL_TUBE_BRANCHING_INVOLVED_IN_LUNG_MORPHOGENESIS, GOBP_POSITIVE_REGULATION_OF_MUSCLE_CELL_DIFFERENTIATION, SP3_Q3, ATACCTC_MIR202

GO Biological Process (20): morphogenesis of an epithelial sheet (GO:0002011), cell adhesion (GO:0007155), cell surface receptor signaling pathway (GO:0007166), negative regulation of muscle cell apoptotic process (GO:0010656), regulation of cell migration (GO:0030334), neuron projection development (GO:0031175), positive regulation of Rac protein signal transduction (GO:0035022), establishment of epithelial cell apical/basal polarity (GO:0045198), positive regulation of cell adhesion (GO:0045785), regulation of embryonic development (GO:0045995), positive regulation of muscle cell differentiation (GO:0051149), positive regulation of phosphatidylinositol 3-kinase/protein kinase B signal transduction (GO:0051897), epithelial tube branching involved in lung morphogenesis (GO:0060441), branching involved in salivary gland morphogenesis (GO:0060445), retinal blood vessel morphogenesis (GO:0061304), regulation of basement membrane organization (GO:0110011), positive regulation of integrin-mediated signaling pathway (GO:2001046), tissue development (GO:0009888), regulation of cell adhesion (GO:0030155), retina development in camera-type eye (GO:0060041)

GO Molecular Function (5): extracellular matrix structural constituent (GO:0005201), glycosphingolipid binding (GO:0043208), receptor ligand activity (GO:0048018), signaling receptor binding (GO:0005102), protein binding (GO:0005515)

GO Cellular Component (10): extracellular region (GO:0005576), basement membrane (GO:0005604), laminin-111 trimer (GO:0005606), laminin-121 trimer (GO:0005608), obsolete extracellular space (GO:0005615), cell-cell junction (GO:0005911), membrane (GO:0016020), extracellular matrix (GO:0031012), protein complex involved in cell-matrix adhesion (GO:0098637), laminin trimer (GO:0043256)

Reactome top-level categories

Rollup of top-11 pathways:

CategoryPathways
Extracellular matrix organization3
Axon guidance1
MET promotes cell motility1
Biofilm formation1
Non-integrin membrane-ECM interactions1
Developmental Cell Lineages of the Exocrine Pancreas1
Nervous system development1
Signaling by Receptor Tyrosine Kinases1
Signaling by MET1
Signal Transduction1
Developmental Biology1

GO top-level categories

Rollup of top GO terms by namespace:

CategoryTerms
signal transduction2
cell adhesion2
anatomical structure development2
extracellular matrix2
cellular anatomical structure2
laminin trimer2
morphogenesis of an epithelium1
cellular process1
muscle cell apoptotic process1
regulation of muscle cell apoptotic process1
negative regulation of apoptotic process1
cell migration1
regulation of cell motility1
neuron development1
plasma membrane bounded cell projection organization1
Rac protein signal transduction1
regulation of Rac protein signal transduction1
positive regulation of small GTPase mediated signal transduction1
polarized epithelial cell differentiation1
establishment of apical/basal cell polarity1
establishment or maintenance of epithelial cell apical/basal polarity1
establishment of epithelial cell polarity1
regulation of cell adhesion1
positive regulation of cellular process1
embryo development1
regulation of multicellular organismal development1
muscle cell differentiation1
positive regulation of cell differentiation1
regulation of muscle cell differentiation1
phosphatidylinositol 3-kinase/protein kinase B signal transduction1
regulation of phosphatidylinositol 3-kinase/protein kinase B signal transduction1
positive regulation of intracellular signal transduction1
branching morphogenesis of an epithelial tube1
lung morphogenesis1
salivary gland morphogenesis1
morphogenesis of a branching epithelium1
blood vessel morphogenesis1
retina vasculature morphogenesis in camera-type eye1
basement membrane organization1
regulation of extracellular matrix organization1

Protein interactions and networks

STRING

1262 interactions, top by confidence (×1000):

Protein AProtein BPartner UniProtScore
LAMA1LAMB1P07942827
LAMA1NLGN2Q8NFZ4719
LAMA1LAMC1P11047696
LAMA1CLEC3AO75596669
LAMA1COL4A2P08572640
LAMA1NID1P14543630
LAMA1ITGA6P23229627
LAMA1COL6A1P12109618
LAMA1ITGA7Q13683600
LAMA1FAT3Q8TDW7592
LAMA1ITGA2P17301580
LAMA1NID2Q14112568
LAMA1COL11A1P12107560
LAMA1SHBGP04278549
LAMA1ITGB1P05556549

IntAct

68 interactions, top by confidence:

ABTypeScore
ARRDC1WWP2psi-mi:“MI:0914”(association)0.850
KSR2POLR3Apsi-mi:“MI:0914”(association)0.530
OS9AGRNpsi-mi:“MI:0914”(association)0.530
FBXO2TMEM131Lpsi-mi:“MI:0914”(association)0.530
CRPQSOX1psi-mi:“MI:0914”(association)0.530
LGALS3PODXLpsi-mi:“MI:0914”(association)0.530
LGALS1PODXLpsi-mi:“MI:0914”(association)0.530
p4cLAMA1psi-mi:“MI:0915”(physical association)0.520
TmpoLAMA1psi-mi:“MI:0407”(direct interaction)0.440
LAMA1H2BC9psi-mi:“MI:0915”(physical association)0.400
PrkciLLGL2psi-mi:“MI:0914”(association)0.350
Kctd5psi-mi:“MI:0914”(association)0.350
Tube1psi-mi:“MI:0914”(association)0.350
Bag2psi-mi:“MI:0914”(association)0.350
Tubg1RTL8Cpsi-mi:“MI:0914”(association)0.350
Get4BAG6psi-mi:“MI:0914”(association)0.350
Dctn4DCTN6psi-mi:“MI:0914”(association)0.350
STRN3STK24psi-mi:“MI:0914”(association)0.350
TUBG1DPM1psi-mi:“MI:0914”(association)0.350
Myh3RPL10psi-mi:“MI:0914”(association)0.350
ImmtGOSR1psi-mi:“MI:0914”(association)0.350
TOMM40NOS1APpsi-mi:“MI:0914”(association)0.350
Trim32NSFpsi-mi:“MI:0914”(association)0.350
Prmt6LAMA1psi-mi:“MI:0914”(association)0.350
NESRPL10psi-mi:“MI:0914”(association)0.350
ATL2ACRBPpsi-mi:“MI:0914”(association)0.350
CBX4SDC2psi-mi:“MI:0914”(association)0.350

BioGRID (75): LAMA1 (Affinity Capture-MS), LAMA1 (Affinity Capture-MS), LAMA1 (Affinity Capture-MS), LAMA1 (Affinity Capture-MS), LAMA1 (Affinity Capture-MS), LAMA1 (Affinity Capture-MS), LAMA1 (Affinity Capture-MS), LAMA1 (Affinity Capture-MS), LAMA1 (Affinity Capture-MS), LAMA1 (Affinity Capture-MS), LAMA1 (Affinity Capture-MS), LAMA1 (Affinity Capture-MS), LAMA1 (Affinity Capture-MS), LAMA1 (Affinity Capture-MS), LAMA1 (Affinity Capture-MS)

ESM2 similar proteins: A0A6I8RMG7, A0JP86, A4D0S4, O54890, O70309, P02468, P02469, P05106, P0CY46, P11046, P11047, P13387, P13388, P15215, P15800, P18084, P18563, P18564, P19137, P24043, P25391, P35555, P55268, P80747, P98133, Q07441, Q18823, Q1LVF0, Q1RPR6, Q2KIT5, Q5RB89, Q60675, Q61220, Q61292, Q61526, Q61554, Q61555, Q62918, Q6AYF4, Q6UXH1

Diamond homologs: A0JP86, A2ASQ1, G5ECE3, O00468, O00634, O09118, O15230, O75445, O75882, O95631, P02468, P11047, P15215, P19137, P24043, P25304, P25391, P31696, P34710, P97927, Q00174, Q01635, Q13751, Q13753, Q16363, Q16787, Q18823, Q19981, Q1LVF0, Q24567, Q24568, Q27262, Q2HXW4, Q2QI47, Q5RB89, Q5VV63, Q60675, Q61001, Q61087, Q61092

SIGNOR signaling

1 interactions.

AEffectBMechanism
LAMA1“form complex”Laminin-1binding

Disease & clinical

Clinical variants and AI predictions

ClinVar

1746 variants total. Per-class counts are floors (≥ shown; pagination cap):

ClassificationCount (floor)
Pathogenic81
Likely pathogenic42
Uncertain significance876
Likely benign512
Benign101

Top pathogenic / likely-pathogenic (30)

Variant IDHGVSClassification
1027444NM_005559.4(LAMA1):c.1404_1405del (p.Gly469fs)Pathogenic
1075086NM_005559.4(LAMA1):c.1972C>T (p.Gln658Ter)Pathogenic
1075979NM_005559.4(LAMA1):c.4676_4679del (p.Glu1559fs)Pathogenic
1098868NM_005559.4(LAMA1):c.494del (p.Ile165fs)Pathogenic
1098869NM_005559.4(LAMA1):c.3053del (p.Pro1018fs)Pathogenic
1098918NM_005559.4(LAMA1):c.2962del (p.Tyr988fs)Pathogenic
1098919NM_005559.4(LAMA1):c.1281C>A (p.Cys427Ter)Pathogenic
1284915NM_005559.4(LAMA1):c.842G>A (p.Trp281Ter)Pathogenic
1323157NM_005559.4(LAMA1):c.2480G>A (p.Trp827Ter)Pathogenic
1323159NM_005559.4(LAMA1):c.6489+1G>CPathogenic
1351928NM_005559.4(LAMA1):c.6517C>T (p.Arg2173Ter)Pathogenic
1410367NM_005559.4(LAMA1):c.6861dup (p.Ile2288fs)Pathogenic
144107NM_005559.4(LAMA1):c.588+2T>GPathogenic
144108NM_005559.4(LAMA1):c.7965-15_7965-3delPathogenic
144109NM_005559.4(LAMA1):c.2986del (p.Thr996fs)Pathogenic
144110NM_005559.4(LAMA1):c.2816_2817del (p.Tyr939fs)Pathogenic
144111NM_005559.4(LAMA1):c.555T>G (p.Tyr185Ter)Pathogenic
1457019NM_005559.4(LAMA1):c.7946dup (p.Asn2649fs)Pathogenic
1675304NM_005559.4(LAMA1):c.3919C>T (p.Arg1307Ter)Pathogenic
1708460GRCh37/hg19 18p11.31-11.23(chr18:6939845-8087455)x3Pathogenic
1709400NM_005559.4(LAMA1):c.4807-2A>GPathogenic
1804139NM_005559.4(LAMA1):c.2932_2933delinsG (p.Lys978fs)Pathogenic
1805047NM_005559.4(LAMA1):c.6333dup (p.Gln2112fs)Pathogenic
1897152NM_005559.4(LAMA1):c.8777del (p.Asn2926fs)Pathogenic
1918245NM_005559.4(LAMA1):c.448del (p.Gln150fs)Pathogenic
1947866NM_005559.4(LAMA1):c.2481G>A (p.Trp827Ter)Pathogenic
2007972NM_005559.4(LAMA1):c.3042T>A (p.Cys1014Ter)Pathogenic
2015084NM_005559.4(LAMA1):c.3667C>T (p.Gln1223Ter)Pathogenic
2015122NM_005559.4(LAMA1):c.6982C>T (p.Gln2328Ter)Pathogenic
2019646NM_005559.4(LAMA1):c.7628_7632del (p.Pro2543fs)Pathogenic

SpliceAI

9908 predictions. Top by Δscore:

VariantEffectΔscore
18:6942235:ACCAG:Aacceptor_gain1.0000
18:6942236:CCAG:Cacceptor_gain1.0000
18:6942236:CCAGC:Cacceptor_gain1.0000
18:6942237:CAG:Cacceptor_gain1.0000
18:6942237:CAGC:Cacceptor_gain1.0000
18:6942238:AG:Aacceptor_gain1.0000
18:6942240:C:CCacceptor_gain1.0000
18:6942245:C:CTacceptor_gain1.0000
18:6942246:A:Tacceptor_gain1.0000
18:6943174:ACAT:Adonor_loss1.0000
18:6943178:A:ACdonor_gain1.0000
18:6943178:ACC:Adonor_loss1.0000
18:6943179:C:CCdonor_gain1.0000
18:6947158:CCCA:Cdonor_loss1.0000
18:6947159:CCAC:Cdonor_loss1.0000
18:6947160:CA:Cdonor_loss1.0000
18:6947161:A:Cdonor_loss1.0000
18:6947162:C:CGdonor_loss1.0000
18:6947292:TTTGA:Tacceptor_gain1.0000
18:6947294:TGA:Tacceptor_gain1.0000
18:6947297:C:CCacceptor_gain1.0000
18:6948422:T:TAdonor_gain1.0000
18:6948441:T:TAdonor_gain1.0000
18:6949095:GCTTA:Gdonor_loss1.0000
18:6949096:CTTA:Cdonor_loss1.0000
18:6949097:TTACA:Tdonor_loss1.0000
18:6949098:TA:Tdonor_loss1.0000
18:6949099:A:ACdonor_gain1.0000
18:6949099:A:Cdonor_loss1.0000
18:6949100:C:CAdonor_gain1.0000

AlphaMissense

20229 scored. Top likely-pathogenic:

VariantProtein changeam_pathogenicity
18:6965302:C:GR2394P0.999
18:7050736:G:CC182W0.999
18:7050737:C:GC182S0.999
18:7050738:A:GC182R0.999
18:7050738:A:TC182S0.999
18:7050879:A:GW135R0.999
18:7050879:A:TW135R0.999
18:7080035:A:CS95R0.999
18:7080035:A:TS95R0.999
18:7080037:T:GS95R0.999
18:7080041:C:AW93C0.999
18:7080041:C:GW93C0.999
18:7080043:A:GW93R0.999
18:7080043:A:TW93R0.999
18:7080370:C:GC50S0.999
18:7080370:C:TC50Y0.999
18:7080371:A:GC50R0.999
18:7080371:A:TC50S0.999
18:6971901:C:AW2285C0.998
18:6971901:C:GW2285C0.998
18:6977747:C:GA2109P0.998
18:7049172:C:GR225P0.998
18:7050737:C:TC182Y0.998
18:7050806:C:GC159S0.998
18:7050807:A:GC159R0.998
18:7050807:A:TC159S0.998
18:7050837:A:GW149R0.998
18:7050837:A:TW149R0.998
18:7080313:C:GC69S0.998
18:7080314:A:TC69S0.998

dbSNP variants (sampled 300 via entrez): RS1000008775 (18:6972417 A>G), RS1000046772 (18:7045032 A>G), RS1000047467 (18:7007520 T>C), RS1000078969 (18:7113083 G>A,C), RS1000091249 (18:6997628 G>A,C,T), RS1000093070 (18:6987307 C>G), RS1000098743 (18:7045269 G>A), RS1000126833 (18:6967146 C>G), RS1000143719 (18:7018099 G>C), RS1000160537 (18:7078312 G>A,T), RS1000175316 (18:7029730 A>G), RS1000208806 (18:7039106 A>G), RS1000214968 (18:7078413 G>A,T), RS1000225157 (18:7107825 T>A,C,G), RS1000239902 (18:7102096 T>C)

Disease associations

OMIM: gene MIM:150320 | disease phenotypes: MIM:615960

GenCC curated gene-disease

DiseaseClassificationInheritance
ataxia - intellectual disability - oculomotor apraxia - cerebellar cysts syndromeDefinitiveAutosomal recessive

Mondo (5): ataxia - intellectual disability - oculomotor apraxia - cerebellar cysts syndrome (MONDO:0014419), inherited retinal dystrophy (MONDO:0019118), optic atrophy (MONDO:0003608), retinal disorder (MONDO:0005283), intellectual disability (MONDO:0001071)

Orphanet (3): Ataxia-intellectual disability-oculomotor apraxia-cerebellar cysts syndrome (Orphanet:370022), OBSOLETE: Inherited retinal disorder (Orphanet:71862), NON RARE IN EUROPE: Unexplained intellectual disability (Orphanet:319658)

HPO phenotypes

30 total (30 of 30 shown, HPO-id order):

HPOTerm
HP:0000007Autosomal recessive inheritance
HP:0000486Strabismus
HP:0000540Hypermetropia
HP:0000545Myopia
HP:0000556Retinal dystrophy
HP:0000639Nystagmus
HP:0000646Amblyopia
HP:0000657Oculomotor apraxia
HP:0000750Delayed speech and language development
HP:0001105Retinal atrophy
HP:0001251Ataxia
HP:0001252Hypotonia
HP:0001263Global developmental delay
HP:0001270Motor delay
HP:0001290Generalized hypotonia
HP:0001320Cerebellar vermis hypoplasia
HP:0002198Dilated fourth ventricle
HP:0002282Gray matter heterotopia
HP:0002342Moderate intellectual disability
HP:0002350Cerebellar cyst
HP:0002363Abnormal brainstem morphology
HP:0002518Abnormal periventricular white matter morphology
HP:0002599Head titubation
HP:0003236Elevated circulating creatine kinase concentration
HP:0003828Variable expressivity
HP:0007033Cerebellar dysplasia
HP:0007068Inferior cerebellar vermis hypoplasia
HP:0011933Elongated superior cerebellar peduncle
HP:0030329Retinal thinning on OCT
HP:0100543Cognitive impairment

GWAS associations

7 associations (top):

StudyTraitp-value
GCST001550_2Type 2 diabetes8.000000e-09
GCST001591_15Response to citalopram treatment4.000000e-06
GCST001591_3Response to citalopram treatment5.000000e-07
GCST006867_80Type 2 diabetes2.000000e-08
GCST009028_27Adverse response to drug8.000000e-07
GCST009379_216Type 2 diabetes2.000000e-08
GCST010118_66Type 2 diabetes9.000000e-10

EFO canonical traits (1, from GWAS)

EFO IDTrait name
EFO:0009658adverse effect

MeSH disease descriptors (4)

DescriptorNameTree numbers
D008607Intellectual DisabilityC10.597.606.360; C23.888.592.604.646; F01.700.687; F03.625.539
D009896Optic AtrophyC10.292.700.225; C11.640.451
D012164Retinal DiseasesC11.768
D058499Retinal DystrophiesC11.768.585.658

Drugs & pharmacology

Drug and pharmacology data

Is drug target: yes

ChEMBL targets (2): CHEMBL2364187 (PROTEIN COMPLEX GROUP), CHEMBL4523594 (SINGLE PROTEIN)

PharmGKB: 1 entry (VIP=true, CPIC=false)

CTD chemical–gene interactions

75 total (human), top 30 by PubMed support.

ChemicalActions (top 5)PubMed papers
sodium arsenitedecreases methylation, affects cotreatment, increases abundance, increases expression, decreases expression6
bisphenol Aincreases expression, affects cotreatment, decreases expression4
Cadmium Chloridedecreases expression, increases expression4
Tobacco Smoke Pollutionaffects expression, increases expression3
Zoledronic Aciddecreases expression2
Arsenicincreases abundance, increases expression, affects cotreatment, decreases expression2
Benzo(a)pyreneincreases expression, increases methylation2
Tretinoindecreases expression, increases expression2
bisphenol Faffects cotreatment, decreases expression1
bufotalinincreases expression1
propionaldehydeincreases expression1
6-hydroxy-5-((p- sulfophenyl)azo)-2-naphthalenesulfonic acid disodium saltaffects cotreatment, increases expression1
sodium arsenateincreases abundance, increases expression1
arsenitedecreases expression1
sulforaphaneincreases expression1
11-nor-delta(9)-tetrahydrocannabinol-9-carboxylic acidaffects methylation, increases abundance1
butyraldehydeincreases expression1
manganese chlorideaffects cotreatment, decreases expression, increases abundance1
Huang Qidecreases reaction, increases expression, affects cotreatment1
aflatoxin B2decreases methylation1
2-amino-3,8-dimethylimidazo(4,5-f)quinoxalineincreases expression1
lei gong tengaffects binding1
pentanalincreases expression1
dinophysistoxin 1decreases expression1
CGP 52608affects binding, increases reaction1
Coptidis rhizoma extractaffects cotreatment, decreases reaction, increases expression1
azaspiraciddecreases expression1
abrineincreases expression1
Centella asiatica extractincreases expression, affects cotreatment, decreases reaction1
Sugarsaffects cotreatment, decreases reaction, increases expression1

ChEMBL screening assays

2 unique, capped per target: 2 binding

Representative assays (with source publication via chembl_document):

Assay IDTypeDescriptionSource paper
CHEMBL4388731BindingBinding affinity to biotin-labeled human recombinant laminin-1 at 10 ug/ml in pH 7.4 Tris buffer by fluorescence microarray methodSynthetic glycopeptides reveal specific binding pattern and conformational change at O-mannosylated position of α-dystroglycan by POMGnT1 catalyzed GlcNAc modification. — Bioorg Med Chem

Clinical trials (associated diseases)

272 trials via MONDO — disease-level, not drug-specific.

TrialPhaseStatusTitle
NCT01955135PHASE4COMPLETEDAnesthesia for Retinopathy of Prematurity
NCT05657860PHASE4COMPLETEDGuanfacine Extended Release for the Reduction of Aggression and Self-injurious Behavior Associated With Prader-Willi Syndrome
NCT05744479PHASE4RECRUITINGMetformin for Antipsychotic-induced Weight Gain in Adults With Intellectual Disability
NCT06107829PHASE4WITHDRAWNValbenazine Treatment of Tardive Dyskinesia in Adults With Intellectual/Developmental Disabilities
NCT06997198PHASE4NOT_YET_RECRUITINGDeutetrabenazine Treatment for Tardive Dyskinesia in Intellectual/Developmental Disabilities
NCT04224207PHASE3COMPLETEDManagement of Retinitis Pigmentosa by Mesenchymal Stem Cells by Wharton’s Jelly Derived Mesenchymal Stem Cells
NCT07082855PHASE3NOT_YET_RECRUITINGA Multicenter, Randomized, Double-Blind, Controlled Clinical Study of Minocycline for the Treatment of Retinitis Pigmentosa
NCT02270736PHASE3COMPLETEDClinical Study to Investigate the Efficacy and Safety of NT 201 Compared to Placebo in the Treatment of Chronic Troublesome Drooling Associated With Neurological Disorders and/or Intellectual Disability
NCT03763227PHASE2COMPLETEDIntravitreal Ranibizumab (Lucentis®) in the Treatment of Non-leaking Macular Cysts in Retinal Dystrophy
NCT04068207PHASE2COMPLETEDMinocycline Treatment in Retinitis Pigmentosa
NCT04945772PHASE2COMPLETEDEfficacy and Safety of MCO-010 Optogenetic Therapy in Adults With Retinitis Pigmentosa [RESTORE]
NCT01373476PHASE2COMPLETEDMulticentre, Randomized, Controlled Trial of Qideng Mingmu Capsule in The Treatment of Diabetic Retinopathy
NCT01793090PHASE2COMPLETEDEPI-743 in Cobalamin C Defect: Effects on Visual and Neurological Impairment
NCT02304302PHASE2COMPLETEDDown Syndrome Memantine Follow-up Study
NCT03862950PHASE2COMPLETEDA Trial of Metformin in Individuals With Fragile X Syndrome (Met)
NCT04529226PHASE2UNKNOWNStudy to Compare Clozapine vs Treatment as Usual in People With Intellectual Disability & Treatment-resistant Psychosis
NCT04821856PHASE2COMPLETEDEvaluation of the Effectiveness of Cannabidiol in Treating Severe Behavioural Problems in Children and Adolescents With Intellectual Disability
NCT05902962PHASE1COMPLETEDSAD of IVT VP-001 in PRPF31 Mutation-Associated Retinal Dystrophy Subjects
NCT06319872PHASE1RECRUITINGThe Effects of Disulfiram (Antabuse®) on Visual Acuity in Patients With Retinal Degeneration
NCT06455826PHASE1COMPLETEDMAD of IVT VP-001 in PRPF31 Mutation-Associated Retinal Dystrophy Subjects (Wallaby)
NCT01064505PHASE1COMPLETEDSafety Study of a Single IVT Injection of QPI-1007 in Chronic Optic Nerve Atrophy and Recent Onset NAION Patients
NCT05147701PHASE1RECRUITINGSafety of Cultured Allogeneic Adult Umbilical Cord Derived Mesenchymal Stem Cells for NAION
NCT05273320PHASE1COMPLETEDClinical Trial of Nabilone for Aggression in Adults With Intellectual and Developmental Disabilities
NCT05301361PHASE1ENROLLING_BY_INVITATIONSensitivity of the NIH Toolbox to Stimulant Treatment in Intellectual Disabilities
NCT06016764PHASE1COMPLETEDUse of MRI and cTBS for Catatonia in Autism
NCT06586827PHASE1COMPLETEDImpact of Competency-Based Training and Technical Assistance Employment Outcomes of Individuals With ID/DD
NCT07531940PHASE1NOT_YET_RECRUITINGEscalating Doses of Memantine in Down Syndrome (MEDS-123)
NCT04855045PHASE2/PHASE3UNKNOWNAn Open-label, Dose Escalation and Double-masked, Randomized, Controlled Trial Evaluating Safety and Tolerability of Sepofarsen in Children (<8 Years of Age) With LCA10 Caused by Mutations in the CEP290 Gene.
NCT03872479PHASE1/PHASE2UNKNOWNSingle Ascending Dose Study in Participants With LCA10
NCT04123626PHASE1/PHASE2ACTIVE_NOT_RECRUITINGA Study to Evaluate the Safety and Tolerability of QR-1123 in Subjects With Autosomal Dominant Retinitis Pigmentosa Due to the P23H Mutation in the RHO Gene
NCT04545736PHASE1/PHASE2RECRUITINGOral Metformin for Treatment of ABCA4 Retinopathy
NCT06212297PHASE1/PHASE2ACTIVE_NOT_RECRUITINGFellow-eye Study (FE) of LX101 in Subjects With Inherited Retinal Dystrophy
NCT06852963PHASE1/PHASE2ACTIVE_NOT_RECRUITINGA Repeat-Dose, Open-Label, Two Arm Safety and Efficacy Study of Two Doses of VP-001 Administered Intravitreally in Participants With Confirmed PRPF31 Mutation-Associated Retinal Dystrophy, Including Participants Previously Treated With VP001
NCT07177196PHASE1/PHASE2ACTIVE_NOT_RECRUITINGPersonalized Antisense Oligonucleotide Therapy for a Single Participant With PRPH2 Mutation Associated With Retinal Dystrophy
NCT07063030EARLY_PHASE1RECRUITINGA Study of LX107 Gene Therapy in AIPL1-IRD Patients
NCT01546181Not specifiedCOMPLETEDRetinal Imaging by Adaptive Optics in Healthy Eyes and During Retinal and General Diseases
NCT01876147Not specifiedCOMPLETEDVisual and Functional Assessment in Low Vision Patients
NCT01920867Not specifiedUNKNOWNStem Cell Ophthalmology Treatment Study
NCT02014389Not specifiedRECRUITINGEvaluation of Objective Perimetry Using Chromatic Multifocal Pupillometer
NCT02983305Not specifiedCOMPLETEDOptical Head-Mounted Display Technology for Low Vision Rehabilitation