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  • Title: Bardet-Biedl syndrome: a case series.
    Author: Elawad OAMA, Dafallah MA, Ahmed MMM, Albashir AAD, Abdalla SMA, Yousif HHM, Daw Elbait AAE, Mohammed ME, Ali HIH, Ahmed MMM, Mohammed NFN, Osman FHM, Mohammed MAY, Abu Shama EAE.
    Journal: J Med Case Rep; 2022 Apr 29; 16(1):169. PubMed ID: 35484558.
    Abstract:
    BACKGROUND: Bardet-Biedl syndrome is a rare multisystem autosomal recessive disorder that falls under the spectrum of ciliopathy disorders. It is characterized by rod-cone dystrophy, renal malformations, polydactyly, learning difficulties, central obesity, and hypogonadism. Many minor features that are related with Bardet-Biedl syndrome might aid in diagnosis and are crucial in clinical management. Bardet-Biedl syndrome is diagnosed on the basis of clinical signs and symptoms, which can be confirmed by genetic testing. Here we present four cases of Bardet-Biedl syndrome. To our knowledge, these are the first cases of Bardet-Biedl syndrome reported from Sudan. CASE PRESENTATION: Here, we report four Sudanese patients who presented with a variety of clinical manifestations of Bardet-Biedl syndrome (two males, 50 and 16 years old; two females, 38 and 18 years old). The first two patients presented with features of chronic kidney disease. The third patient had recently been diagnosed with type 1 diabetes and diabetic ketoacidosis. The fourth patient showed signs of retinal dystrophy early on. Case 1: a 38-year-old female presented with vomiting and irritability; the patient was diagnosed with Bardet-Biedl syndrome as she fulfilled six items of the primary features (obesity, retinitis pigmentosa, post-axial polydactyly, renal abnormalities, learning disabilities, and genitourinary malformations), as well as one secondary feature (cardiovascular involvement, that is, left ventricular hypertrophy). Case 2: a 50-year-old male presented with fatigability; the patient was diagnosed with Bardet-Biedl syndrome as he fulfilled four items of the primary features (obesity, retinitis pigmentosa, post-axial polydactyly, and renal abnormalities) in addition to two secondary features (diabetes mellitus and cardiovascular involvement, that is, left ventricular hypertrophy). Case 3: an 18-year-old female presented with polyuria, polydipsia, weight loss, and epigastric pain for 2 days; the patient was diagnosed with Bardet-Biedl syndrome because he had four major features (retinal dystrophy, post-axial polydactyly, obesity, and learning disabilities) in addition to three secondary features (developmental delay, diabetes mellitus, and strabismus). Case 4: a 16-year-old male presented with a blurring of vision; the patient was diagnosed with Bardet-Biedl syndrome as he exhibited four major features (retinal dystrophy, post-axial polydactyly, obesity, and learning disabilities) plus two secondary features (developmental delay and cataract). CONCLUSION: The scarcity of Bardet-Biedl syndrome necessitates a high index of suspicion to diagnose this syndrome. Increased awareness among physicians is required for the early diagnosis and treatment of Bardet-Biedl syndrome and to avoid complications and mortality.
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