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. 2022 Oct;53(10):3206-3210.
doi: 10.1161/STROKEAHA.122.039575. Epub 2022 Sep 9.

Outcomes of Cerebral Venous Thrombosis due to Vaccine-Induced Immune Thrombotic Thrombocytopenia After the Acute Phase

Anita van de Munckhof  1 Erik Lindgren  2   3 Timothy J Kleinig  4 Thalia S Field  5 Charlotte Cordonnier  6 Katarzyna Krzywicka  1 Sven Poli  7   8 Mayte Sánchez van Kammen  1 Afshin Borhani-Haghighi  9 Robin Lemmens  10 Adrian Scutelnic  11 Alfonso Ciccone  12 Thomas Gattringer  13 Matthias Wittstock  14 Vanessa Dizonno  5 Annemie Devroye  10 Ahmed Elkady  15 Albrecht Günther  16 Alvaro Cervera  17 Annerose Mengel  7 Beng Lim Alvin Chew  18 Brian Buck  19 Carla Zanferrari  20 Carlos Garcia-Esperon  18 Christian Jacobi  21 Cristina Soriano  22 Dominik Michalski  23 Zohreh Zamani  24 Dylan Blacquiere  25 Elias Johansson  26 Elisa Cuadrado-Godia  27 Fabrice Vuillier  28 Felix J Bode  29 François Caparros  6 Frank Maier  30 Georgios Tsivgoulis  31 Hans D Katzberg  32 Jiangang Duan  33 Jim Burrow  34 Johann Pelz  23 Joshua Mbroh  7   8 Joyce Oen  35 Judith Schouten  36 Julian Zimmermann  29 Karl Ng  37 Katia Garambois  38 Marco Petruzzellis  39 Mariana Carvalho Dias  40 Masoud Ghiasian  41 Michele Romoli  42 Miguel Miranda  43 Miriam Wronski  37 Mona Skjelland  44 Mostafa Almasi-Dooghaee  45 Pauline Cuisenier  38 Seán Murphy  46 Serge Timsit  47 Shelagh B Coutts  48 Silvia Schönenberger  49 Simon Nagel  49 Sini Hiltunen  50 Sophie Chatterton  37 Thomas Cox  51 Thorsten Bartsch  52 Vahid Shaygannejad  53   54 Zahra Mirzaasgari  45 Saskia Middeldorp  55 Marcel M Levi  56   57 Johanna A Kremer Hovinga  58 Katarina Jood  2   3 Turgut Tatlisumak  2   3   50 Jukka Putaala  39 Mirjam R Heldner  11 Marcel Arnold  11 Diana Aguiar de Sousa  59   60 José M Ferro  60 Jonathan M Coutinho  1 Cerebral Venous Sinus Thrombosis With Thrombocytopenia Syndrome Study Group
Affiliations

Outcomes of Cerebral Venous Thrombosis due to Vaccine-Induced Immune Thrombotic Thrombocytopenia After the Acute Phase

Anita van de Munckhof et al. Stroke. 2022 Oct.

Abstract

Background: Cerebral venous thrombosis (CVT) due to vaccine-induced immune thrombotic thrombocytopenia (VITT) is a severe condition, with high in-hospital mortality rates. Here, we report clinical outcomes of patients with CVT-VITT after SARS-CoV-2 (severe acute respiratory syndrome coronavirus 2) vaccination who survived initial hospitalization.

Methods: We used data from an international registry of patients who developed CVT within 28 days of SARS-CoV-2 vaccination, collected until February 10, 2022. VITT diagnosis was classified based on the Pavord criteria. Outcomes were mortality, functional independence (modified Rankin Scale score 0-2), VITT relapse, new thrombosis, and bleeding events (all after discharge from initial hospitalization).

Results: Of 107 CVT-VITT cases, 43 (40%) died during initial hospitalization. Of the remaining 64 patients, follow-up data were available for 60 (94%) patients (37 definite VITT, 9 probable VITT, and 14 possible VITT). Median age was 40 years and 45/60 (75%) patients were women. Median follow-up time was 150 days (interquartile range, 94-194). Two patients died during follow-up (3% [95% CI, 1%-11%). Functional independence was achieved by 53/60 (88% [95% CI, 78%-94%]) patients. No new venous or arterial thrombotic events were reported. One patient developed a major bleeding during follow-up (fatal intracerebral bleed).

Conclusions: In contrast to the high mortality of CVT-VITT in the acute phase, mortality among patients who survived the initial hospitalization was low, new thrombotic events did not occur, and bleeding events were rare. Approximately 9 out of 10 CVT-VITT patients who survived the acute phase were functionally independent at follow-up.

Keywords: hospitalization; intracranial thrombosis; mortality; thrombocytopenia; vaccination; venous thrombosis.

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Figures

Figure.
Figure.
Modified Rankin Scale (mRS) score of 60 patients with cerebral venous thrombosis due to vaccine-induced immune thrombotic thrombocytopenia (CVT-VITT) who survived the acute phase, at discharge and at follow-up. Note that CVT-VITT patients who died during initial hospitalization (43/107, 40%) are not included in the Figure. There are 2 missing mRS scores at discharge; both had mRS 0 at follow-up.

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