HLA-G

Chr 6

major histocompatibility complex, class I, G

Also known as: MHC-G

HLA-G belongs to the HLA class I heavy chain paralogues. This class I molecule is a heterodimer consisting of a heavy chain and a light chain (beta-2 microglobulin). The heavy chain is anchored in the membrane. HLA-G is expressed on fetal derived placental cells. The heavy chain is approximately 45 kDa and its gene contains 8 exons. Exon one encodes the leader peptide, exons 2 and 3 encode the alpha1 and alpha2 domain, which both bind the peptide, exon 4 encodes the alpha3 domain, exon 5 encodes the transmembrane region, and exon 6 encodes the cytoplasmic tail. [provided by RefSeq, Jul 2008]

GeneReviewsResearchGenerating clinical summary…
11
Active trials
172
Pubs (1 yr)
P/LP submissions
P/LP missense
1.46
LOEUF
DN
Mechanism· predicted
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GeneReview available — HLA-G
Authoritative clinical overview · Recommended first read
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Some data sources returned errors (1)

omim: Error: OMIM fetch failed: 429

Population Genetics & Constraint

gnomAD v4 — loss-of-function & missense intolerance

Tolerant — LoF & missense variants common in population
LoF Constraint?
1.46LOEUF
pLI 0.000
Z-score 0.11
OE 0.97 (0.671.46)
Tolerant

Highly tolerant — LoF variants common in population

Missense Constraint?
0.23Z-score
OE missense 0.95 (0.851.07)
198 obs / 207.3 exp
Tolerant

Mild missense constraint

Observed / Expected Ratios?
LoF OE?0.97 (0.671.46)
00.351.4
Missense OE?0.95 (0.851.07)
00.61.4
Synonymous OE?1.07
01.21.6
LoF obs/exp: 17 / 17.5Missense obs/exp: 198 / 207.3Syn Z: -0.52

ClinVar Variant Classifications

0 submitted variants in ClinVar

Protein Context — Lollipop Plot

HLA-G · protein map & ClinVar variants

Showing all ClinVar variants across the protein. Search a specific variant to highlight its position.

Clinical Trials

Active and recruiting trials from ClinicalTrials.gov

Acute Myeloid LeukemiaMinimal Residual DiseaseNatural Killer Cell

Infusion of Alloreactive nk Cells for Mrd-positive Aml Patients

RECRUITING
NCT06885476Phase NAIRCCS Azienda Ospedaliero-Universitaria di BolognaStarted 2021-01-22
Infusion of alloreactive NK cells
SepsisSeptic Shock

Myeloid Bias in the Bone Marrow of Septic Patients and Its Correlation With Disease Severity and Prognosis: A Single-Center, Prospective Cohort Study

NOT YET RECRUITING
NCT07667153Union Hospital, Tongji Medical College, Huazhong University of Science and TechnologyStarted 2026-07-15
Bone marrow aspirate collection
EndometriosisImmunityMicrobiota

Innate Immunity, MIcrobiota and Inovative Treatments in Endometriosis

NOT YET RECRUITING
NCT07078435Phase NAUniversity Hospital, GrenobleStarted 2025-09-09
surgery (any volume) and / or pharmaceuticals treatment initiated or planned or only dynamic observation, in accordance with current clinical guidelinesBlood testStool samples
Obstructive Sleep Apnea-Hypopnea SyndromeAnxiety DisordersDepressive Disorders

EGR2 and NLRP3 Pathways in Obstructive Sleep Apnea-Related Cognitive and Mood Disorders

RECRUITING
NCT07120711Xinhua Hospital, Shanghai Jiao Tong University School of MedicineStarted 2025-07-01
EGR2/NLRP3 pathway activityfatty tissue
Humoral Primary Immunodeficiencies (PIDs)Secondary Form of Humoral ImmunodeficienciesCombined Immunodeficiency (CID)

Study of Populations at Risk of Developing Chronic Hepatitis Linked to Chronic Enteric Virus Infection in Patients With Primary Immunodeficiency and Secondary Humoral Deficiency

RECRUITING
NCT06659588Assistance Publique - Hôpitaux de ParisStarted 2024-10-10
Plasma, urine and stool collection
Hepatitis C Virus Infection

Characterization of Immune Genotypes and Antibody Profiles to Foster the discoVERY of diagnosticbioMARKERS of Liver Cancer Development

RECRUITING
NCT06718530Centro di Riferimento Oncologico - AvianoStarted 2024-05-13
Heart Transplant Rejection

Trifecta-Heart cfDNA-MMDx Study

RECRUITING
NCT04707872University of AlbertaStarted 2021-06-01
MMDx diagnostic testProsperaHLA antibody
Glioma

Clinical Study for the Safety and Therapeutic Efficacy of the AI-QMMM Designed TamavaqTM Personalised Vaccine in Patients With Newly Diagnosed Glioma.

RECRUITING
NCT07077616Phase EARLY_PHASE1Biogenea Pharmaceuticals Ltd.Started 2025-07-01
Biological: personalized vaccine Based on genetic and transcriptional sequencing information, personalized peptide vaccines would be designed and produced;
Autoimmune Hepatitis

A Study on Factors of Biochemical Response in Autoimmune Hepatitis

NOT YET RECRUITING
NCT06356506Beijing Friendship HospitalStarted 2024-05-01
Psoriatic ArthritisOsteoarthitisKnee

CARTIZ Registry: Cartilage, Arthropathy and Imaging Under Tirzepatide in Zone-stratified Cohorts - A Four-Institute Mexican Observational Registry

NOT YET RECRUITING
NCT07567378JULIO GRANADOS MONTIELStarted 2026-05
Tirzepatide
X-linked Severe Combined Immunodeficiency (XSCID)

Lentiviral Gene Transfer for Treatment of Children Older Than Two Years of Age With X-Linked Severe Combined Immunodeficiency (XSCID)

RECRUITING
NCT01306019Phase PHASE1, PHASE2National Institute of Allergy and Infectious Diseases (NIAID)Started 2012-09-25
Ex vivo culture and transduction of the patient's autologous CD34+ HSC with lentivirus vector VSV-G pseudotyped CL20- 4i-EF1alpha-hgammac-OPT vectorBusulfanPalifermin