Saito-Kuba-Tsuruta syndrome

Saito-Kuba-Tsuruta syndrome, also known as Fibulo-ulnar hypoplasia-renal anomalies syndrome, is a very rare genetic disorder which is characterized by fibulo-ulnar dysplasia associated with renal abnormalities. It is associated with neo-natal respiratory failure soon after birth.[1][2]

Saito-Kuba-Tsuruta syndrome
Other namesfibulo-ulnar hypoplasia-renal anomalies syndrome
SpecialtyMedical genetics
SymptomsRenal abnormalities and fibulo-ulnar dysplasia
ComplicationsNeo-natal death due to respiratory failure
Usual onsetBirth
DurationLife-long
CausesAutosomal recessive inheritance
Diagnostic methodPhysical examination
Preventionnone
TreatmentUsually, none can be performed due to the baby's short life
PrognosisBad
FrequencyVery rare, only 2 cases have been reported
Deaths2

Presentation

Both of the affected siblings that were first described showed the following symptoms: A high chance of dying soon after being born, facial dysmorphisms/anomalies, ear abnormalities, symmetric long bone deficiency, fibular aplasia, symphalangism, congenital heart defects, and hypoplasia of the kidney.[3]

Etimology

It was first discovered in April 1989, when Saito et al. described 2 siblings of the opposite sex (one male and one female) born to healthy, young, non-consanguineous parents. The siblings showed the symptoms mentioned above. When post-mortem examination was performed in the brother, he was found to have truncus arteriosus and a ventricular septal defect. During pregnancy, ultrasounds had shown 2 gestational sacs early on the pregnancy, one contained a fetus (that of the male) and the other started deteriorating and finally disappeared 15 weeks into the pregnancy. When Saito et al. investigated, they found that no other syndrome had features similar to this case, therefore they proposed this case to be part of a brand new, separate autosomal recessive syndrome.[4]

References

  1. RESERVED, INSERM US14-- ALL RIGHTS. "Orphanet: Syndrome de Saito Kuba Tsuruta". www.orpha.net. Retrieved 2022-05-18.
  2. "Saito Kuba Tsuruta syndrome - About the Disease - Genetic and Rare Diseases Information Center". rarediseases.info.nih.gov. Retrieved 2022-05-18.
  3. Saito, N.; Kuba, A.; Tsuruta, T. (April 1989). "Lethal form of fibuloulnar A/hypoplasia with renal abnormalities". American Journal of Medical Genetics. 32 (4): 452–456. doi:10.1002/ajmg.1320320403. ISSN 0148-7299. PMID 2773984.
  4. "OMIM Entry - 228940 - FIBULOULNAR APLASIA OR HYPOPLASIA WITH RENAL ABNORMALITIES". omim.org. Retrieved 2022-05-19.
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