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Hereditary thrombotic thrombocytopenic purpura (TTP) with co-occurring autosomal dominant polycystic kidney disease (ADPKD)
  1. Randah Dahlan1 and
  2. Eman Bablghaith2
  1. 1Department of Internal Medicine, Section of Nephrology, King Abdullah Medical City, Mecca, Mecca region, Saudi Arabia
  2. 2Department of Internal Medicine, King Abdullah Medical City, Mecca, Mecca region, Saudi Arabia
  1. Correspondence to Dr Randah Dahlan; randahdahlan{at}


Hereditary thrombotic thrombocytopenic purpura (TTP) and autosomal dominant polycystic kidney disease (ADPKD) are two distinct genetic diseases that may affect the kidneys through different mechanisms. ADPKD is a common genetic disorder that leads to exponential formation and growth of cysts replacing all segments of nephrons. Hereditary TTP is a rare autosomal recessive disorder that leads to the disseminated formation of arteriolar platelet-rich thrombi, which produce manifestations of various organs dysfunction. We present a case of a pregnant female with hereditary TTP co-occurring with ADPKD. To our knowledge, this is the first case in the literature describing the co-occurrence of ADPKD and hereditary TTP. We aim to describe the clinical course including the renal and the pregnancy outcomes, describe the consanguinity and family history, and try to explain the potential effect of one disease on the clinical course of the other.

  • Genetic screening / counselling
  • Chronic renal failure

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  • Contributors RD (corresponding author): was involved in the care of the patient, conceived the presented data, collected the data, drafted the manuscript, revised it and approved its final version. RD agrees to be accountable for the article and to ensure that all questions regarding the accuracy or integrity of the article are investigated and resolved. EB: involved in the care, helped with the literature review and with acquisition of the data, drafting the manuscript and approve its final version. EM also agrees to be accountable to the article.

  • Funding The authors have not declared a specific grant for this research from any funding agency in the public, commercial or not-for-profit sectors.

  • Case reports provide a valuable learning resource for the scientific community and can indicate areas of interest for future research. They should not be used in isolation to guide treatment choices or public health policy.

  • Competing interests None declared.

  • Provenance and peer review Not commissioned; externally peer reviewed.