Internal Medicine Alphabet – G
| S. No | Abbreviation | Full Form | Short Explanation | Practical Example |
|---|---|---|---|---|
| G001 | G6PD | Glucose-6-Phosphate Dehydrogenase | Enzyme deficiency causing hemolysis. | Hemolysis after fava bean ingestion. |
| G002 | GA | General Anesthesia | State of unconsciousness for surgery. | Used in major abdominal operations. |
| G003 | GABA | Gamma-Aminobutyric Acid | Inhibitory neurotransmitter in CNS. | Targeted by benzodiazepines. |
| G004 | GAD | Glutamic Acid Decarboxylase | Autoantibody in type 1 diabetes. | Positive in autoimmune diabetes. |
| G005 | GAHT | Gender Affirming Hormone Therapy | Hormonal treatment in gender transition. | Estradiol therapy in trans women. |
| G006 | GB | Gallbladder | Organ storing bile. | Inflamed in cholecystitis. |
| G007 | GBS | Guillain-Barré Syndrome | Acute immune-mediated polyneuropathy. | Causes ascending paralysis. |
| G008 | GBM | Glioblastoma Multiforme | Aggressive brain tumor. | MRI shows ring-enhancing lesion. |
| G009 | GCA | Giant Cell Arteritis | Vasculitis of temporal arteries. | Causes headache, vision loss. |
| G010 | GCF | Gingival Crevicular Fluid | Fluid around gums, marker of oral health. | Used in periodontal studies. |
| G011 | GCS | Glasgow Coma Scale | Neurological score of consciousness. | GCS ≤ 8 = coma. |
| G012 | GCT | Giant Cell Tumor | Benign but locally aggressive bone tumor. | Found in distal femur. |
| G013 | GD | Graves’ Disease | Autoimmune hyperthyroidism. | Patient presents with goiter and exophthalmos. |
| G014 | GDM | Gestational Diabetes Mellitus | Diabetes first diagnosed in pregnancy. | Screened with OGTT. |
| G015 | GDS | Geriatric Depression Scale | Tool for screening depression in elderly. | Used in geriatrics clinics. |
| G016 | GDT | Goal Directed Therapy | Treatment strategy in sepsis/ICU. | Early goal-directed fluid resuscitation. |
| G017 | GFR | Glomerular Filtration Rate | Measurement of kidney function. | eGFR < 60 indicates CKD. |
| G018 | GGT | Gamma-Glutamyl Transferase | Enzyme marker for liver disease. | Elevated in alcohol-related liver disease. |
| G019 | GH | Growth Hormone | Pituitary hormone regulating growth. | Excess causes acromegaly. |
| G020 | GHD | Growth Hormone Deficiency | Deficiency leading to growth delay. | Treated with GH injections. |
| G021 | GI | Gastrointestinal | Relating to stomach and intestines. | GI bleed evaluation. |
| G022 | GIB | Gastrointestinal Bleeding | Bleeding from GI tract. | Melena in peptic ulcer disease. |
| G023 | GIST | Gastrointestinal Stromal Tumor | Rare GI tumor from interstitial cells. | Treated with imatinib. |
| G024 | GIT | Gastrointestinal Tract | The digestive tract. | Infections like gastroenteritis. |
| G025 | GLP-1 | Glucagon-Like Peptide-1 | Incretin hormone regulating glucose. | Targeted by diabetes drugs. |
| G026 | GLUT | Glucose Transporter | Protein family mediating glucose entry. | GLUT4 is insulin-dependent. |
| G027 | GM | Gram-Megakaryocyte | Hematology cell precursor. | Seen in bone marrow biopsy. |
| G028 | GM-CSF | Granulocyte-Macrophage Colony Stimulating Factor | Cytokine for WBC growth. | Used in neutropenia therapy. |
| G029 | GMP | Good Manufacturing Practice | Standards for drug quality and safety. | Applied in pharma industry. |
| G030 | GN | Glomerulonephritis | Kidney inflammation affecting glomeruli. | Seen in post-strep GN. |
| G031 | GNR | Gram-Negative Rods | Class of bacteria. | E. coli is a GNR. |
| G032 | GP | General Practitioner | Primary care physician. | Manages common illnesses. |
| G033 | GPA | Granulomatosis with Polyangiitis | ANCA-associated vasculitis. | Causes sinusitis and renal disease. |
| G034 | GPC | Gram-Positive Cocci | Bacterial morphology group. | Staph aureus is GPC. |
| G035 | GPI | Glycosylphosphatidylinositol | Cell membrane anchor protein. | Defective in PNH. |
| G036 | GPP | Generalized Pustular Psoriasis | Severe psoriasis with systemic symptoms. | Requires immunosuppressive therapy. |
| G037 | GPT | Glutamate Pyruvate Transaminase | Another name for ALT. | Elevated in hepatitis. |
| G038 | GQOL | General Quality of Life | Patient-reported outcome measure. | Used in clinical research. |
| G039 | GR | Glucocorticoid Receptor | Receptor mediating steroid actions. | Targeted by steroids in inflammation. |
| G040 | GRF | Gonadotropin Releasing Factor | Hormone from hypothalamus. | Stimulates LH/FSH release. |
| G041 | GRP | Gastrin-Releasing Peptide | GI neuropeptide stimulating gastrin. | Elevated in GI tumors. |
| G042 | GS | Gilbert’s Syndrome | Benign hereditary hyperbilirubinemia. | Causes mild jaundice. |
| G043 | GSD | Glycogen Storage Disease | Genetic disorder of glycogen metabolism. | GSD type I (Von Gierke’s). |
| G044 | GSH | Glutathione | Antioxidant tripeptide. | Deficiency increases oxidative stress. |
| G045 | GSI | Gastroesophageal Reflux Severity Index | Symptom scoring tool. | Used in GERD follow-up. |
| G046 | GSM | Genitourinary Syndrome of Menopause | Urogenital symptoms after menopause. | Vaginal dryness, urinary urgency. |
| G047 | GSP | Glycated Serum Protein | Marker of glycemic control. | Alternative to HbA1c. |
| G048 | GST | Glutathione S-Transferase | Detox enzyme family. | Studied in drug metabolism. |
| G049 | GT | Gene Therapy | Correcting disease via genetic methods. | Applied in hemophilia. |
| G050 | GTT | Glucose Tolerance Test | Test for diabetes screening. | Used in pregnancy. |
| G051 | GU | Genitourinary | Related to genital and urinary system. | GU infections treated in internal medicine. |
| G052 | GVA | General Visceral Afferents | Autonomic nerve fibers. | Carry signals from viscera. |
| G053 | GVHD | Graft Versus Host Disease | Immune reaction post-transplant. | Causes rash, diarrhea, liver dysfunction. |
| G054 | GVL | Graft Versus Leukemia | Immune effect against cancer post-transplant. | Seen in bone marrow transplant. |
| G055 | GYN | Gynecology | Female reproductive health specialty. | Pap smear is a GYN test. |
| G056 | GABA-R | GABA Receptor | Neurotransmitter receptor for inhibition. | Target of benzodiazepines. |
| G057 | GAG | Glycosaminoglycan | Structural molecule in connective tissue. | Elevated in mucopolysaccharidoses. |
| G058 | GALT | Gut-Associated Lymphoid Tissue | Immune tissue of GI tract. | First defense against GI pathogens. |
| G059 | GAN | Giant Axonal Neuropathy | Rare neurodegenerative disease. | Causes severe childhood neuropathy. |
| G060 | GAPDH | Glyceraldehyde-3-Phosphate Dehydrogenase | Glycolytic enzyme often used in labs. | Control gene in PCR. |
| G061 | GAV | Gastric Acid Volume | Measurement of stomach acid output. | Used in GI studies. |
| G062 | GBCA | Gadolinium-Based Contrast Agent | MRI contrast chemical. | Used in brain scans. |
| G063 | GBPS | Gated Blood Pool Scan | Nuclear imaging test for cardiac function. | Assesses ventricular ejection fraction. |
| G064 | GDF | Growth Differentiation Factor | Cytokine family member. | GDF-15 studied in heart failure. |
| G065 | GDI | Global Deterioration Index | Dementia severity staging. | Used in Alzheimer’s disease. |
| G066 | GDL | Gestational Diabetes Laboratory | Specific lab profile for pregnancy diabetes. | Includes OGTT and HbA1c. |
| G067 | GDNF | Glial Cell Line-Derived Neurotrophic Factor | Protein supporting neuron survival. | Studied in Parkinson’s therapy. |
| G068 | GDSC | Genomics of Drug Sensitivity in Cancer | Cancer pharmacogenomic database. | Used in oncology research. |
| G069 | GDTI | General Diagnostic Test Index | Combined lab scoring tool. | Applied in health screening. |
| G070 | GEE | Generalized Estimating Equations | Statistical method in medicine. | Used in longitudinal studies. |
| G071 | GEF | Guanine Nucleotide Exchange Factor | Molecular switch regulator. | Studied in cancer biology. |
| G072 | GEP | Gene Expression Profiling | Technique to study mRNA levels. | Used in personalized medicine. |
| G073 | GERD | Gastroesophageal Reflux Disease | Chronic reflux disorder. | Treated with PPIs. |
| G074 | GES | Gastric Electrical Stimulation | Therapy for gastroparesis. | Implanted pacemaker in stomach. |
| G075 | GFAP | Glial Fibrillary Acidic Protein | Astrocyte marker protein. | Elevated in brain injury. |
| G076 | GGTase | Geranylgeranyltransferase | Enzyme in cholesterol pathway. | Target in drug design. |
| G077 | GHB | Gamma-Hydroxybutyrate | Drug and neurotransmitter. | Abuse linked to CNS depression. |
| G078 | GHQ | General Health Questionnaire | Mental health screening tool. | Used in epidemiological studies. |
| G079 | GIGT | Gestational Impaired Glucose Tolerance | Pre-diabetic state in pregnancy. | Diagnosed by OGTT. |
| G080 | GIM | Gastric Intestinal Metaplasia | Precancerous gastric change. | Found in chronic gastritis biopsies. |
| G081 | GINA | Global Initiative for Asthma | International asthma guideline. | Defines asthma management steps. |
| G082 | GIP | Gastric Inhibitory Peptide | Incretin hormone stimulating insulin. | Measured in metabolic studies. |
| G083 | GIS | Geographic Information System | Tool applied in epidemiology. | Used in infectious disease mapping. |
| G084 | GIST-1 | Gastrointestinal Stromal Tumor Marker 1 | Tumor marker used in oncology. | Assists in follow-up imaging. |
| G085 | GJB2 | Gap Junction Protein Beta-2 | Gene mutation causing deafness. | Tested in audiology genetics. |
| G086 | GLP | Good Laboratory Practice | Standards for lab quality. | Applied in clinical trials. |
| G087 | GLT | Glucose Loading Test | Diabetes screening in pregnancy. | Used in antenatal care. |
| G088 | GM1 | Ganglioside GM1 | Target in autoimmune neuropathy. | GM1 antibodies in Guillain-Barré. |
| G089 | GMPc | Cyclic Guanosine Monophosphate | Intracellular messenger molecule. | Activated in nitric oxide signaling. |
| G090 | GNA | Guanine Nucleotide Binding Protein | Cell signaling protein family. | Mutations cause endocrine tumors. |
| G091 | GNB | Gram-Negative Bacilli | Bacterial group. | Klebsiella is GNB. |
| G092 | GNRI | Geriatric Nutritional Risk Index | Tool to assess nutrition in elderly. | Used in hospitalized older adults. |
| G093 | GNT | Gentamicin | Antibiotic drug. | Used in severe bacterial infections. |
| G094 | GO | Graves’ Ophthalmopathy | Eye manifestation of Graves’ disease. | Causes exophthalmos. |
| G095 | GOF | Gain of Function | Mutation increasing protein activity. | Seen in oncogenes. |
| G096 | GORD | Gastro-Oesophageal Reflux Disease | UK term for GERD. | Treated with proton pump inhibitors. |
| G097 | GPCR | G Protein-Coupled Receptor | Large family of cell receptors. | Target of many drugs. |
| G098 | GPIIb/IIIa | Glycoprotein IIb/IIIa | Platelet receptor for aggregation. | Blocked by antiplatelet drugs. |
| G099 | GPPV | General Purpose Patient Ventilation | Mechanical ventilator type. | Used in ICUs. |
| G100 | GPT2 | Glutamic Pyruvate Transaminase 2 | Mitochondrial enzyme. | Studied in metabolic disorders |
| S. No | Abbreviation | Full Form | Short Explanation | Practical Example |
|---|---|---|---|---|
| G101 | GPT2 | Glutamic Pyruvate Transaminase 2 | Mitochondrial enzyme linked to amino acid metabolism. | Studied in metabolic disorders. |
| G102 | GRAS | Generally Recognized As Safe | FDA designation for substances in food/medicine. | Used in nutrition and pharma safety. |
| G103 | GRE | Gradient Recalled Echo | MRI imaging technique. | Used in neuroimaging. |
| G104 | GRF | Glomerular Reserve Function | Extra renal filtering capacity beyond baseline GFR. | Assessed in kidney transplant evaluation. |
| G105 | GRK | G Protein-Coupled Receptor Kinase | Enzyme regulating GPCR signaling. | Target in cardiovascular medicine. |
| G106 | GRN | Granulin | Protein involved in neuronal survival. | Mutation causes frontotemporal dementia. |
| G107 | GSAT | Graded Symptom Assessment Tool | Patient-reported symptom severity measure. | Used in chronic fatigue syndrome. |
| G108 | GSC | Germinal Stem Cells | Precursors of reproductive gametes. | Studied in infertility research. |
| G109 | GSD-I | Glycogen Storage Disease Type I | Genetic metabolic disorder of glucose regulation. | Von Gierke’s disease. |
| G110 | GSE | Gene Set Enrichment | Bioinformatics analysis of gene expression. | Used in oncology and genomics. |
| G111 | GSK | Glycogen Synthase Kinase | Enzyme regulating glycogen metabolism. | Target in diabetes drug research. |
| G112 | GSMR | Generalized Summary Mendelian Randomization | Genetic epidemiology technique. | Used in causal inference studies. |
| G113 | GSTP1 | Glutathione S-Transferase Pi 1 | Detox enzyme, biomarker in cancer. | Studied in chemotherapy resistance. |
| G114 | GSV | Great Saphenous Vein | Longest vein in human body. | Harvested for CABG surgery. |
| G115 | GTCS | Generalized Tonic-Clonic Seizure | Type of epilepsy with convulsions. | Managed with antiepileptic drugs. |
| G116 | GTE | Green Tea Extract | Natural compound with antioxidant effects. | Studied for metabolic syndrome. |
| G117 | GTF | General Transcription Factor | Protein involved in DNA transcription. | Studied in cancer biology. |
| G118 | GTP | Guanosine Triphosphate | Cellular energy and signaling molecule. | Used in protein synthesis. |
| G119 | GTPase | GTP Hydrolyzing Enzyme | Enzyme family regulating cell signaling. | Ras oncogene encodes a GTPase. |
| G120 | GTT-IV | Intravenous Glucose Tolerance Test | Alternative to oral glucose testing. | Used in endocrinology studies. |
| G121 | GUSB | Beta-Glucuronidase | Lysosomal enzyme; deficiency causes mucopolysaccharidosis VII. | Used in lab enzyme assays. |
| G122 | GV | Gastric Varices | Dilated veins in stomach due to portal HTN. | Risk of upper GI bleed. |
| G123 | GVD | Generalized Vascular Disease | Widespread atherosclerotic involvement. | Seen in diabetes mellitus. |
| G124 | GVLK | Graft Versus Leukemia Kill | Beneficial immune effect post-transplant. | Prevents relapse in AML patients. |
| G125 | GWAS | Genome-Wide Association Study | Study design linking genes to disease. | Used in type 2 diabetes genetics. |
| G126 | GXD | Gene Expression Database | Repository of gene expression data. | Used in research. |
| G127 | GZMB | Granzyme B | Cytotoxic T-cell enzyme inducing apoptosis. | Elevated in viral infections. |
| G128 | GAA | Glycogen Accumulation Assay | Lab test in Pompe’s disease. | Measures enzyme deficiency. |
| G129 | GAGs | Glycosaminoglycans | Structural polysaccharides in connective tissue. | Elevated in Hurler’s syndrome. |
| G130 | GAM | Generalized Additive Model | Statistical model used in epidemiology. | Applied in air pollution studies. |
| G131 | GAP | GTPase-Activating Protein | Regulatory protein turning off GTPase activity. | Studied in Ras signaling. |
| G132 | GAS | Group A Streptococcus | Pathogenic bacteria causing pharyngitis. | Causes rheumatic fever. |
| G133 | GATA | GATA Transcription Factor | Family regulating blood cell development. | Mutations cause blood disorders. |
| G134 | GBCA-NSF | Gadolinium-Based Contrast Agent Nephrogenic Systemic Fibrosis | Contrast-induced condition in CKD. | MRI patients with renal disease. |
| G135 | GBE | Glycogen Branching Enzyme | Deficient in GSD-IV. | Causes cirrhosis. |
| G136 | GBM Ab | Anti-Glomerular Basement Membrane Antibody | Seen in Goodpasture’s syndrome. | Causes pulmonary-renal syndrome. |
| G137 | GC | Gonococcus | Neisseria gonorrhoeae bacteria. | Causes gonorrhea. |
| G138 | GC-MS | Gas Chromatography-Mass Spectrometry | Analytical test in toxicology. | Used for drug screening. |
| G139 | GCAv | Giant Cell Aortitis | Aortic involvement in giant cell arteritis. | Risk of aortic aneurysm. |
| G140 | GCDH | Glutaryl-CoA Dehydrogenase | Deficient in glutaric acidemia. | Causes neurodegeneration. |
| G141 | GCFI | Geriatric Cognitive Function Index | Tool to assess elderly cognition. | Used in dementia studies. |
| G142 | GCH1 | GTP Cyclohydrolase 1 | Deficiency causes dopamine-responsive dystonia. | Treated with levodopa. |
| G143 | GCL | Gamma-Glutamyl Cysteine Ligase | Enzyme in glutathione synthesis. | Deficiency causes oxidative stress. |
| G144 | GCM | Giant Congenital Melanocytic Nevus | Large pigmented birthmark with cancer risk. | Requires monitoring. |
| G145 | GCN | Generalized Convulsive Seizure | Broad seizure type classification. | Managed with AEDs. |
| G146 | GCP | Good Clinical Practice | Ethical/quality standard for trials. | Required in pharma trials. |
| G147 | GCR | Glucocorticoid Resistance | Reduced steroid sensitivity. | Seen in asthma. |
| G148 | GCSF | Granulocyte Colony Stimulating Factor | Stimulates neutrophil production. | Used in chemotherapy-induced neutropenia. |
| G149 | GCTM | Germ Cell Tumor Marker | Tumor markers for testicular cancer. | Includes AFP and β-hCG. |
| G150 | GCV | Ganciclovir | Antiviral drug for CMV. | Used in immunocompromised patients. |
| G151 | GDH | Glutamate Dehydrogenase | Enzyme in nitrogen metabolism. | Biomarker for C. difficile infection. |
| G152 | GDS-15 | Geriatric Depression Scale-15 | Short form screening tool. | Used in elderly outpatient clinics. |
| G153 | GDTM | Goal Directed Therapy Monitoring | ICU management principle. | Used in septic shock. |
| G154 | GEFV | Gastroesophageal Flap Valve | Anti-reflux anatomical structure. | Graded in endoscopy. |
| G155 | GFD | Gluten-Free Diet | Therapy for celiac disease. | Strict lifelong adherence required. |
| G156 | GFI1 | Growth Factor Independence 1 | Transcription factor in hematopoiesis. | Mutations linked to leukemia. |
| G157 | GFRa | GDNF Family Receptor Alpha | Receptor in neurotrophic signaling. | Studied in neuron repair. |
| G158 | GGT1 | Gamma-Glutamyl Transferase 1 | Isoenzyme in liver metabolism. | Elevated in cholestasis. |
| G159 | GHB-UR | Gamma-Hydroxybutyrate Urine Test | Toxicology screening. | Used in forensic medicine. |
| G160 | GH-RH | Growth Hormone-Releasing Hormone | Hypothalamic peptide. | Stimulates GH secretion. |
| G161 | GIMAP | GTPase IMAP Family | Family of immune GTPases. | Studied in autoimmune diseases. |
| G162 | GIPR | Gastric Inhibitory Polypeptide Receptor | Receptor mediating incretin action. | Target in diabetes drugs. |
| G163 | GISN | Global Influenza Surveillance Network | WHO disease monitoring system. | Used during flu epidemics. |
| G164 | GJA1 | Gap Junction Protein Alpha-1 | Gene encoding connexin 43. | Mutations cause heart arrhythmias. |
| G165 | GLDH | Glutamate Dehydrogenase | Mitochondrial enzyme, liver biomarker. | Elevated in liver injury. |
| G166 | GLI | Glioma-Associated Oncogene | Transcription factors in brain tumors. | Studied in medulloblastoma. |
| G167 | GLP2 | Glucagon-Like Peptide-2 | Gut hormone regulating absorption. | Used in short bowel syndrome therapy. |
| G168 | GLS | Global Longitudinal Strain | Echocardiographic measure of LV function. | Used in cardio-oncology. |
| G169 | GLT1 | Glutamate Transporter 1 | CNS transporter clearing glutamate. | Dysfunction linked to ALS. |
| G170 | GLU | Glucose | Primary blood sugar molecule. | Measured in diabetes monitoring. |
| G171 | GLUD1 | Glutamate Dehydrogenase 1 | Enzyme in amino acid metabolism. | Mutations cause hyperinsulinism. |
| G172 | GM2 | Ganglioside GM2 | Accumulates in Tay-Sachs disease. | Enzyme deficiency test. |
| G173 | GMP | Guanosine Monophosphate | Nucleotide in RNA synthesis. | Used in cell signaling. |
| G174 | GNAQ | G Protein Subunit Alpha Q | Oncogene in melanomas. | Mutation in uveal melanoma. |
| G175 | GNAT | G Protein N-Acetyltransferase | Enzyme in protein acetylation. | Studied in signaling biology. |
| G176 | GNB3 | G Protein Subunit Beta 3 | Gene polymorphism linked to HTN. | Studied in pharmacogenetics. |
| G177 | GNMT | Glycine N-Methyltransferase | Enzyme in methionine metabolism. | Mutation causes liver disease. |
| G178 | GOI | Gene of Interest | Targeted gene in research. | Used in molecular biology studies. |
| G179 | GOT | Glutamate Oxaloacetate Transaminase | Another name for AST enzyme. | Elevated in hepatitis. |
| G180 | GP | Glycoprotein | Protein with sugar groups. | Found in viral envelopes. |
| G181 | GPAA | Glycosylphosphatidylinositol Anchor Attachment | Enzyme in protein anchoring. | Studied in blood disorders. |
| G182 | GPAT | Glycerol-3-Phosphate Acyltransferase | Enzyme in triglyceride synthesis. | Studied in obesity. |
| G183 | GPC3 | Glypican-3 | Tumor marker for HCC. | Elevated in hepatocellular carcinoma. |
| G184 | GPER | G Protein-Coupled Estrogen Receptor | Mediates non-genomic estrogen signaling. | Studied in cardiovascular disease. |
| G185 | GPIHBP1 | Glycosylphosphatidylinositol-anchored High-Density Lipoprotein-Binding Protein 1 | Protein in triglyceride metabolism. | Mutation causes hyperlipidemia. |
| G186 | GPL | Generalized Pustular Lesions | Dermatologic finding. | Seen in psoriasis flares. |
| G187 | GPNMB | Glycoprotein NMB | Biomarker in cancer and inflammation. | Elevated in melanoma. |
| G188 | GPx | Glutathione Peroxidase | Antioxidant enzyme. | Deficiency linked to oxidative stress. |
| G189 | GRB2 | Growth Factor Receptor-Bound Protein 2 | Adapter protein in signaling. | Studied in oncogenesis. |
| G190 | GRIA | Glutamate Ionotropic Receptor AMPA Type | CNS receptor family. | Mutations linked to epilepsy. |
| G191 | GRIN | Glutamate Ionotropic Receptor NMDA Type | CNS receptor family. | Studied in schizophrenia. |
| G192 | GRK2 | G Protein-Coupled Receptor Kinase 2 | Regulates heart GPCR signaling. | Studied in heart failure. |
| G193 | GRN | Granulin Gene | Mutation causes neurodegeneration. | Linked to FTD. |
| G194 | GRS | Genetic Risk Score | Combined genetic measure for disease risk. | Used in personalized medicine. |
| G195 | GSD-III | Glycogen Storage Disease Type III | Cori disease, debranching enzyme deficiency. | Causes hepatomegaly. |
| G196 | GSK3 | Glycogen Synthase Kinase 3 | Enzyme in metabolism and signaling. | Target in diabetes and mood disorders. |
| G197 | GSTM1 | Glutathione S-Transferase Mu 1 | Detox enzyme polymorphism. | Linked to cancer risk. |
| G198 | GTF2 | General Transcription Factor 2 | Regulator of gene expression. | Studied in genetics. |
| G199 | GTPBP | GTP-Binding Protein | Family of cellular proteins. | Studied in protein translation. |
| G200 | GUSBp | Beta-Glucuronidase Pseudogene | Non-functional gene copy. | Used as research control. |
