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Case report
Congenital thrombotic thrombocytopenic purpura presenting in adulthood with recurrent cerebrovascular events
  1. Emma Tenison1,2,
  2. Ashar Asif3 and
  3. Mathew Sheridan4
  1. 1 Translational Health Sciences, University of Bristol Musculoskeletal Research Unit, Bristol, UK
  2. 2 Older People’s Unit, Royal United Hospitals Bath NHS Foundation Trust, Bath, UK
  3. 3 Medical School, University of Bristol, Bristol, UK
  4. 4 Bristol Haematology and Oncology Centre, University Hospitals Bristol NHS Foundation Trust, Bristol, UK
  1. Correspondence to Dr Emma Tenison, et6915{at}


Congenital thrombotic thrombocytopenic purpura (cTTP) is a rare, life-threatening disease, characterised by episodes of microangiopathic haemolytic anaemia (MAHA), thrombocytopenia and small vessel thrombosis. We describe a case of cTTP first diagnosed at age 70 years in a female presenting with an acute ischaemic stroke and thrombocytopenia, in whom A Disintegrin And Metalloproteinase with a Thrombospondin type 1 Motif, member 13 (ADAMTS13) levels were <10%, suggestive of thrombotic thrombocytopaenic purpura (TTP). The patient underwent plasma exchange and started rituximab for presumed immune TTP; however, anti-ADAMTS13 antibody titres were negative on two occasions. This, together with a history of pregnancies complicated by presumed disseminated intravascular coagulation, and two previous episodes of sepsis with MAHA, prompted investigation for cTTP, which was confirmed by genetic testing. Despite treatment with infusions of solvent/detergent-treated, virus-inactivated fresh frozen plasma, she has re-presented with further neurological deficit, associated with new infarcts on imaging. cTTP has a varied phenotype which, as demonstrated in this case, can include large vessel occlusion.

  • stroke
  • haematology (incl blood transfusion)
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  • Contributors ET: planning, literature search, initial draft of manuscript and editing. AA: literature search, editing of manuscript, acquisition of images. MS: editing of manuscript.

  • 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.

  • Competing interests None declared.

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

  • Patient consent for publication Obtained.

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