The long-term burden of disease
Patients with cTTP experience disease- and treatment-related complications and burdens that have a negative impact on their HRQoL.
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✓ For pregnant women with cTTP, the International Society on Thrombosis and Haemostasis (ISTH) recommends prophylactic treatment over no prophylactic treatment to reduce maternal and infant mortality and morbidity rates. [1]
✓ The British Society for Haematology (BSH) and the Swedish TTP treatment recommendations also recommends that pregnant women with cTTP receive regular therapy prophylactically to prevent clinical TTP relapse. [2], [3]
✓ The BSH also recommends that ADAMTS13 prophylaxis should be considered for all patients with cTTP, with an individualized approach to dose and frequency according to symptoms, whether overt or non-overt. [2]
In a study reporting on prospective data on 87 patients from the Hereditary TTP Registry of patients, the annual incidence of acute episodes was 0.36 (95% confidence interval (CI), 0.29-0.44) with regular plasma treatment and 0.41 (95% CI, 0.30-0.56) without regular plasma treatment. [4]
Did you know?
A literature review, followed by expert haematologistsÈ interviews and telephone interviews of adults with cTTP, revealed that the life of patients with cTTP, once a diagnosis is made (which, according to analysis of a Uo TTP registry, can sometimes take years [5]), is largely impacted by treatment and travel burden, and emotional consequences of cTTP (e.g. anxiety and depression). [6]
Addressing the unmet needs of cTTP patients requires a comprehensive approach that considers the challenges associated with the current standard of care. A multinational chart review study suggested that TTP patients' care journey could be improved by novel, less burdensome therapies with demonstrated efficacy and safety profiles. [7]
Use of Adzymna during pregnancy: No/limited data. May be considered after careful benefit/risk assessment before and during treatment. Animal studies do not indicate direct/indirect harmful effects with respect to reproductive toxicity. [8]
Acronyms
ADAMTS13, A disintegrin and metalloproteinase with a thrombospondin motifs 13
BSH, British Society for Haematology
CI, Confidence interval
cTTP, Congenital TTP
ISTH, International Society on Thrombosis and Haemostasis
SmPC, Summary of product characteristics
TTP, Thrombotic thrombocytopenic purpura
Patients with cTTP experience disease- and treatment-related complications and burdens that have a negative impact on their HRQoL.
Congenital thrombotic thrombocytopenic purpura (cTTP) is caused by autosomal recessive mutations in the ADAMTS13 gene.
1. Zheng XL, et al. J Thromb Haemost. 2020; 18(10):2696-2502
2. Scully M, et al. Br J Haematol. 2023;203:546-563
3. Socialstyrelsen – Trombotisk trombocytopen purpura; https://www.socialstyrelsen.se/kunskapsstod-och-regler/omraden/sallsynta-halsotillstand/om-kunskapsdatabasen/sok-bland-sallsynta-halsotillstand/trombotisk-trombocytopen-purpura/
4. Tarasco E, et al. Blood. 2021;137(25):3563–3575
5. Alwan F, et al. Blood. 2019;133(15):1644–1651
6. Oladapo AO, et al. Patient. 2019;12(5):503–512
7. Coppo P, et al. Blood. 2023;142(Suppl 1):4006
8. ADZYNMA (rADAMTS13) EU Summary of Product Characteristics. August 2024