Diseases
Tetraploidy
Tetraploidy: A very rare chromosomal disorder which results in various abnormalities. Infants are usually stillborn or die within months of birth.
Tetrasomy X
A rare chromosomal disorder which causes mental retardation, small head and various other anomalies.
Thakker Donnai syndrome
Thakker-Donnai syndrome: A very rare, severe genetic syndrome characterized by abnormal internal organs and facial anomalies.
Thalamic degeneration symmetrical infantile
Thalamic degeneration- symmetric infantile
A very rare brain disorder characterized by abnormal brain development, seizures, respiratory distress and movement disorders.
Thalamic syndrome
Thalamic syndrome (or thalamic pain syndrome) is a condition that can be associated with inadequate blood supply from the posterior cerebral artery.Thalamic Syndrome (Dejerine-Roussy) is a rare neurological disorder in which the body becomes hypersensitive to pain as a result of damage to the thalamus, a part of the brain that affects sensation. The thalamus has been described as the brain’s sensory relay station. Primary symptoms are pain and loss of sensation, usually in the face, arms, and/or legs. Pain or discomfort may be felt after being mildly touched or even in the absence of a stimulus. The pain associated with thalamic syndrome may be made worse by exposure to heat or cold and by emotional distress. Sometimes, this may include even such emotions as those brought on by listening to music.
Thanatophoric dysplasia Glasgow variant
Thanatophoric dysplasia, Glasgow variant: A lethal form of dwarfism.
Thanatophoric dysplasia- type 1
Thanatophoric dysplasia, type 1: A rare lethal genetic disorder characterized by severe skeletal abnormalities, flat vertebrae, large head and low nasal bridge.
Thanatophoric dysplasia- type 2
Thanatophoric dysplasia, type 2: A rare lethal genetic disorder characterized by severe skeletal abnormalities, flat vertebrae, large head and low nasal bridge
Thanos Stewart Zonana syndrome
Theodor Hertz Goodman syndrome
A very rare syndrome characterized mainly by short stature, fused finger bones and extra testes.
Thiamine responsive megaloblastic anemia syndrome
A rare genetic disorder characterized by megaloblastic anemia, hearing loss and diabetes. The condition is caused by a deficiency of a thiamine (vitamin B1) transporter protein which means that the body is unable to effectively utilize thiamine from the diet.
Thickened earlobes with conductive deafness from incus-stapes abnormalities
A very rare syndrome characterized by thick earlobes and conductive deafness due to an inner ear structure abnormality. The deafness is non-progressive and occurs at birth.
Thies Reis syndrome
A rare condition characterized by hearing loss caused by fixation of stapes (ear bone which causes conductive deafness if it becomes fixed and immovable). It can occur as a result of various bone diseases or even chronic ear infections
Thin ribs tubular bones dysmorphism
A very rare syndrome characterized mainly by thin ribs, narrow-shafted long bones and a large head.
Thiolase deficiency
A rare syndrome involving a deficiency of an enzyme called thiolase which results in mental retardation and muscle problems.
Thiopurine S methyltranferase deficiency
Thiopurine methyltransferase or thiopurine S-methyltransferase (TPMT) is an enzyme (EC 2.1.1.67) that methylates thiopurine compounds. The methyl donor is S-adenosyl-L-methionine, which is converted to S-adenosyl-L-homocysteine. This gene encodes the enzyme that metabolizes thiopurine drugs via S-adenosyl-L-methionine as the S-methyl donor and S-adenosyl-L-homocysteine as a byproduct. Thiopurine drugs such as 6-mercaptopurine are used as chemotherapeutic agents. Genetic polymorphisms that affect this enzymatic activity are correlated with variations in sensitivity and toxicity to such drugs within individuals. A pseudogene for this locus is located on chromosome 18q
Thomas Jewett Raines syndrome
A very rare syndrome characterized mainly by small eyes, small ears and a lack of fetal movement.
Thomas syndrome
Another name for Dejerine-Sottas disease (or close medical condition association). An inherited, progressive, hypertrophic nervous system disorder which affects limb function
Thompson Baraitser syndrome
A very rare syndrome characterized mainly by liver fibrosis, kidney cysts and mental retardation.
Thong Douglas Ferrante syndrome
A very rare syndrome characterized mainly by short stature, deafness and a blood abnormality.
Thoracic celosomia
A rare malformation where the organs inside the chest protrude through an abnormal opening in the chest wall.
Thoracic dysplasia hydrocephalus syndrome
A very rare syndrome characterized by abnormal chest development and excess fluid inside the skull.
Thoracic Insufficiency Syndrome
Thoracic insufficiency syndrome may result from a primary chest wall problem and/or from scoliosis. This can become so significant at a young age that it can impact normal lung development and growth which can affect the function of the chest in moving air in and out of the lungs.
Thoraco abdominal enteric duplication
A very rare syndrome characterized by chest and abdominal abnormalities as well as intestinal duplication.
Thrombocytopenia cerebellar hypoplasia short stature
A very rare syndrome characterized mainly by short stature, low blood platelets and abnormal brain development.
Thrombocytopenia chromosome breakage
A very rare inherited disorder characterized by low blood platelets, carcinomas and autoimmunity.
Thrombocytopenia Robin sequence
A very rare syndrome characterized by a variety of abnormalities such as short stature, unusual hair, reduced blood platelets, heart defects and tooth enamel anomaly.
Thrombocytopenia X-linked
A mild inherited form of thrombocytopenia which is a blood clotting disorder caused by a reduced number of normal blood platelets.
