Trichorhinophalangeal syndrome type 3

From WikiMD's Wellness Encyclopedia

Alternate names[edit | edit source]

TRPS 3; Sugio-Kajii Syndrome

Definition[edit | edit source]

Trichorhinophalangeal syndrome type 3 (TRPS3), also known as Sugio-Kajii syndrome, is an extremely rare inherited multisystem disorder.

Cause[edit | edit source]

RPS3 is caused by mutations in the TRPS1 gene which is localized to 8q24.12.

Inheritance[edit | edit source]

Autosomal dominant pattern, a 50/50 chance.

TRPS3 is inherited in an autosomal dominant manner.

Signs and symptoms[edit | edit source]

TRPS3 is characterized by short stature, sparse hair, a bulbous nasal tip and cone-shaped epiphyses (the growing ends of bones), as well as severe generalized shortening of all finger and toe bones (brachydactyly).

Clinical presentation[edit | edit source]

For most diseases, symptoms will vary from person to person. People with the same disease may not have all the symptoms listed. 80%-99% of people have these symptoms

  • Bulbous nose
  • Clinodactyly of the 5th finger(Permanent curving of the pinkie finger)
  • Cone-shaped epiphysis(Cone-shaped end part of bone)
  • Frontal bossing
  • Long philtrum
  • Long upper lip(Elongation of upper lip)
  • Macrotia(Large ears)
  • Micrognathia(Little lower jaw)
  • Protruding ear(Prominent ear)
  • Short distal phalanx of finger(Short outermost finger bone)
  • Short metacarpal(Shortened long bone of hand)
  • Short metatarsal(Short long bone of foot)
  • Short stature(Decreased body height)
  • Shortening of all phalanges of fingers(Shortening of all finger bones)
  • Sparse and thin eyebrow(Thin, sparse eyebrows)
  • Sparse eyelashes(Scant eyelashes)
  • Triangular face(Face with broad temples and narrow chin)

30%-79% of people have these symptoms

  • Avascular necrosis of the capital femoral epiphysis
  • Camptodactyly of finger(Permanent flexion of the finger)
  • Fragile nails(Brittle nails)
  • High palate(Elevated palate)
  • Hyperlordosis(Prominent swayback)
  • Increased number of teeth(Extra teeth)
  • Leukonychia(White discoloration of nails)
  • Muscular hypotonia(Low or weak muscle tone)
  • Pectus carinatum(Pigeon chest)
  • Scoliosis

Diagnosis[edit | edit source]

Treatment[edit | edit source]

NIH genetic and rare disease info[edit source]

Trichorhinophalangeal syndrome type 3 is a rare disease.


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