Galactosemia is a family of genetic disorders which affect how the body processes a simple sugar called galactose. Specifically, it affects the body’s ability to convert galactose (a sugar...

Galactosialidosis is a rare condition that affects many regions of the body due to complications with lysosomal storage. Lysosomes are a special compartment within t...

Gardner's Syndrome is a rare genetic disorder characterized by multiple polyps and tumors in and around the colon.

Cancer is the uncontrolled division and growth of a certain cell type in the body. Gastrointestinal stromal tumors (GISTs) are a type of cancer that arises in the gastrointestinal (GI)...

Gastroschisis is a type of abdominal wall defect in which the intestines develop outside the fetal abdomen.

Gaucher disease is an inherited metabolic disease that is caused by a deficiency of the enzyme, beta-glucocerebrosidase, which, in turn, results in an accumulation of the fat, glucosyl...

Hereditary geniospasm is a movement disorder that causes episodes of involuntary tremors of the chin and lower lip.

Geographic tongue is a disorder of the tongue characterized by painful, discolored regions of taste buds.

Giant axonal neuropathy is a rare neurological disorder involving the dysfunction of a specific type of protein in nerve cells which is essential for normal nerve function because it forms neurofil...

Giant Cell Arteritis is an inflammatory disease of the blood vessels.

Gitelman Syndrome is a rare genetic disorder causing the kidneys to pass too much sodium, magnesium, chloride, and potassium into the urine.

Glioblastoma Multiforme is the most common and most aggressive type of primary brain tumor.

Gliomatosis Cerebri is a rare form of brain tumor.

Glomus tumors are a rare benign neoplasm typically found in the skin of the extremities.

Glucose Galactose Malabsorption Deficiency is a genetic disorder where the small intestine is unable to absorb and transport glucose and galactose in food.

Glucose Transporter Type 1 Deficiency Syndrome is a rare disorder caused by impaired glucose transport into the brain.

Glucose-6-Phosphate Dehydrogenase Deficiency is a hereditary disease characterised by abnormally low levels of glucose-6-phosphate dehydrogenase.

Glutaric Aciduria Type 1 is a rare inherited disorder in which the body is unable to break down completely the amino acids lysine, hydroxylysine and tryptophan causing damage to the brain and other...

The human body uses glucose, a carbohydrate or sugar, as its main source of energy. Glycogen storage diseases affect the body’s ability to either store glucose in the form of gly...

Glycogen Storage Disease Type 2 is a rare, autosomal recessive metabolic disorder.

Glycogen storage disease type 4 is a very rare hereditary metabolic disorder.

The human body uses glucose, a sugar, as its main source of energy. Glycogen storage diseases affect the body’s ability to either store glucose in the form of glycogen for later ...

GNE myopathy, also known as hereditary inclusion body myopathy (HIBM) type 2, is a rare disease that causes progressive muscle weakness in the muscles of the lower l...

Goldenhar Syndrome is a rare congenital disorder characterized by incomplete development of the ear, nose, soft palate, lip, and mandible.

Goodpasture syndrome is a rare autoimmune disorder characterized by the presence of anti-glomerular basement membrane antibodies in the bloodstream. These antibodies...

Gorlin Syndrome is a genetic condition that increases the risk of developing tumors.

GRACILE Syndrome genetic disorder of the Finnish heritage diseases.

Graft Versus Host Disease is a bone marrow transplant complication in which the immune system recognizes the recipient as "foreign" causing an immunologic attack.

Granuloma Annulare is a rare chronic skin disorder consisting of a rash with reddish bumps.

Granulosa Cell Tumors of the Ovary arise from granulosa cells. These tumours are part of the sex cord-gonadal stromal tumouror non-epithelial group of tumours.

Graves' Disease is a rare thyroid disorder characterized by goitre, exophthalmos, and hyperthyroidism.

Great Vessels Transposition is a congenital heart defect involving the arrangement of any of the primary blood vessels.

Greig Cephalopolysyndactyly Syndrome is a rare disorder characterized by extra fingers and toes, widely spaced eyes and a flattish nose.

Griscelli syndrome is a rare, inherited condition characterized by hypopigmentation, or light skin and light hair. Griscelli syndrome is an autosomal reces...

Grover's Disease is a skin disorder characterized by small red, bumpy spots.

Growth Hormone Deficiency is a disorder in which the body does not produce enough growth hormone.

Guillain-Barré Syndrome is a rare nervous system disorder in which the body's immune system attacks part of the peripheral nervous system.

Gyrate Atrophy is a rare hereditary metabolism disorder primarily affecting the retina.