T
- TPA deficiency
- TPI - Thiose phosphate isomerase deficiency
- TPID; Triose phosphate isomerase deficiency
- TPP
- TPP2
- TRIP12 Mutations
- TSC
- TTP
- TTR amyloid neuropathy
- Trabecular fiber myopathy
- Tracheobronchomalacia
- Tracheobronchomegaly
- Tracheobronchopathia osteochondroplastica
- Tracheobronchopathia osteoplastica
- Tracheopathia osteochondroplastica
- Tracheopathia osteoplastica
- Transcobalamin 1 deficiency
- Transcobalamin II deficiency
- Transient global amnesia
- Transient neonatal diabetes mellitus
- Transthyretin amyloid neuropathy
- Transthyretin amyloid polyneuropathy
- Transthyretin amyloidosis
- Transverse limb deficiency hemangioma
- Treft Sanborn Carey syndrome
- Trehalase deficiency
- Tricho odonto onycho dermal syndrome
- Tricho-dento-osseous syndrome
- Tricho-dento-osseous syndrome 1
- Tricho-hepato-enteric syndrome
- Trichodental syndrome
- Trichodermodysplasia dental alterations
- Trichohepatoenteric syndrome 2
- Trichomegaly cataract hereditary spherocytosis
- Trichomegaly with mental retardation, dwarfism and pigmentary degeneration of retina
- Trichorhinophalangeal Syndrome
- Trichorhinophalangeal syndrome type 1
- Trichorhinophalangeal syndrome type 2
- Trichorhinophalangeal syndrome type 3
- Trichorrhexis nodosa syndrome
- Trichostasis spinulosa
- Trichothiodystrophy type C
- Trichothiodystrophy with congenital ichtyosis
- Trichothiodystrophy-neurocutaneous syndrome
- Trichothiodystrophy-neurocutaneous syndrome syndrome
- Trichothiodystrophy-neurotrichocutaneous syndrome of Pollitt
- Trifunctional protein deficiency
- Trifunctional protein deficiency, type 1
- Trifunctional protein deficiency, type 2
- Trigeminal neuralgia
- Triglyceride storage disease with ichthyosis
- Trigonocephaly ptosis mental retardation
- Trimethylaminuria
- Triose phosphate-isomerase deficiency
- Triosephosphate isomerase deficiency
- Triphalangeal thumbs brachyectrodactyly
- Triple A syndrome
- Trismus-pseudocamptodactyly syndrome
- Trisomy 13 mosaicism
- Trisomy 18
- Trisomy 22
- Trisomy 3q
- Trisomy 9
- Tropical calcific pancreatitis
- Truncus Arteriosus
- Trypsinogen deficiency
