NCT05341713

Brief Summary

Background and Objectives: Seizure attack is one of adverse effects of vaccination in epileptic patients, the risk of which after severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) inoculation was elucidated in the present study. Methods: A self-controlled case series study was designed to examine the association between vaccination and epileptic seizure. A total of 240 epilepsy patients were included who were vaccinated with inactive SARS-CoV-2 vaccines (Sinovac Life Sciences and Lanzhou Institute of Biological Products) and admitted to outpatient clinics from July 2021 to December 2021. Poisson analysis was performed to estimate the relative incidence rate of epileptic seizure in risk periods (day 1-7, 8-21 and 1-21 after first-dose vaccination) compared to basal level in control period.

Trial Health

87
On Track

Trial Health Score

Automated assessment based on enrollment pace, timeline, and geographic reach

Enrollment
240

participants targeted

Target at P75+ for all trials

Timeline
Completed

Started Jan 2022

Shorter than P25 for all trials

Geographic Reach
1 country

1 active site

Status
completed

Health score is calculated from publicly available data and should be used for screening purposes only.

Trial Relationships

Click on a node to explore related trials.

Study Timeline

Key milestones and dates

Study Start

First participant enrolled

January 1, 2022

Completed
3 months until next milestone

Primary Completion

Last participant's last visit for primary outcome

April 1, 2022

Completed
Same day until next milestone

Study Completion

Last participant's last visit for all outcomes

April 1, 2022

Completed
15 days until next milestone

First Submitted

Initial submission to the registry

April 16, 2022

Completed
6 days until next milestone

First Posted

Study publicly available on registry

April 22, 2022

Completed
Last Updated

April 22, 2022

Status Verified

April 1, 2022

Enrollment Period

3 months

First QC Date

April 16, 2022

Last Update Submit

April 16, 2022

Conditions

Keywords

epilepsy patientrisk of seizureSARS-Cov-2 vaccine

Outcome Measures

Primary Outcomes (2)

  • Risk of epileptic seizures within 21 days after first-dose vaccination with inactive SARS-CoV-2 vaccine in epilepsy patients

    Overall relative incidence of epileptic seizures in risk periods compared to control period.

    from 90 days before until 21 days after the first dose of vaccine

  • Risk of epileptic seizures in epilepsy patients of different subgroups

    The associations of sex, age or medication status with the relative incidence in risk periods

    from 90 days before until 21 days after the first dose of vaccine

Interventions

We included epilepsy patients who were vaccinated with inactive SARS-CoV-2 vaccines

Eligibility Criteria

Age3 Years+
Sexall
Healthy VolunteersNo
Age GroupsChild (0-17), Adult (18-64), Older Adult (65+)
Sampling MethodNon-Probability Sample
Study Population

We retrospectively enrolled epilepsy patients visiting outpatient clinics of the above two centers from July 2021 to December 2021, who took inactivated vaccines from Sinovac Life Sciences and Sinopharm Group (China). The study included both adults and children aged above 3 years. All the patients were diagnosed with epilepsy according to the International League Against Epilepsy (ILAE) Commission 90 days before till 21 days after the first dose of vaccine. Demographics, clinical manifestations and vaccination records were collected.

You may qualify if:

  • Male or female participants
  • Have a diagnosis of epilepsy by the end of the study
  • Have received at least one dose of inactive SARS-Cov-2 vaccine (Sinovac Life Sciences and Sinopharm Group)

You may not qualify if:

  • Non-epilepsy patients vaccinated with inactive SARS-Cov-2 vaccine
  • Epilepsy patients administrated with non-inactive vaccine
  • Unvaccinated epilepsy patients

Contact the study team to confirm eligibility.

Sponsors & Collaborators

Study Sites (1)

Xijing Hospital

Xi'an, Shaanxi, 710000, China

Location

Related Publications (5)

  • Frontera JA, Sabadia S, Lalchan R, Fang T, Flusty B, Millar-Vernetti P, Snyder T, Berger S, Yang D, Granger A, Morgan N, Patel P, Gutman J, Melmed K, Agarwal S, Bokhari M, Andino A, Valdes E, Omari M, Kvernland A, Lillemoe K, Chou SH, McNett M, Helbok R, Mainali S, Fink EL, Robertson C, Schober M, Suarez JI, Ziai W, Menon D, Friedman D, Friedman D, Holmes M, Huang J, Thawani S, Howard J, Abou-Fayssal N, Krieger P, Lewis A, Lord AS, Zhou T, Kahn DE, Czeisler BM, Torres J, Yaghi S, Ishida K, Scher E, de Havenon A, Placantonakis D, Liu M, Wisniewski T, Troxel AB, Balcer L, Galetta S. A Prospective Study of Neurologic Disorders in Hospitalized Patients With COVID-19 in New York City. Neurology. 2021 Jan 26;96(4):e575-e586. doi: 10.1212/WNL.0000000000010979. Epub 2020 Oct 5.

    PMID: 33020166BACKGROUND
  • Cabezudo-Garcia P, Ciano-Petersen NL, Mena-Vazquez N, Pons-Pons G, Castro-Sanchez MV, Serrano-Castro PJ. Incidence and case fatality rate of COVID-19 in patients with active epilepsy. Neurology. 2020 Sep 8;95(10):e1417-e1425. doi: 10.1212/WNL.0000000000010033. Epub 2020 Jun 17.

    PMID: 32554773BACKGROUND
  • Frontera JA, Tamborska AA, Doheim MF, Garcia-Azorin D, Gezegen H, Guekht A, Yusof Khan AHK, Santacatterina M, Sejvar J, Thakur KT, Westenberg E, Winkler AS, Beghi E; contributors from the Global COVID-19 Neuro Research Coalition. Neurological Events Reported after COVID-19 Vaccines: An Analysis of VAERS. Ann Neurol. 2022 Mar 2;91(6):756-71. doi: 10.1002/ana.26339. Online ahead of print.

    PMID: 35233819BACKGROUND
  • Massoud F, Ahmad SF, Hassan AM, Alexander KJ, Al-Hashel J, Arabi M. Safety and tolerability of the novel 2019 coronavirus disease (COVID-19) vaccines among people with epilepsy (PwE): A cross-sectional study. Seizure. 2021 Nov;92:2-9. doi: 10.1016/j.seizure.2021.08.001. Epub 2021 Aug 6.

    PMID: 34391030BACKGROUND
  • Arnheim-Dahlstrom L, Hallgren J, Weibull CE, Sparen P. Risk of presentation to hospital with epileptic seizures after vaccination with monovalent AS03 adjuvanted pandemic A/H1N1 2009 influenza vaccine (Pandemrix): self controlled case series study. BMJ. 2012 Dec 18;345:e7594. doi: 10.1136/bmj.e7594.

    PMID: 23274350BACKGROUND

Study Officials

  • Gengyao Hu, doctor

    Air Force Military Medical University, China

    PRINCIPAL INVESTIGATOR
  • Ze Chen, master

    Air Force Military Medical University, China

    PRINCIPAL INVESTIGATOR
  • Kejian Wu, doctor

    Air Force Military Medical University, China

    PRINCIPAL INVESTIGATOR
  • Yuanhang Pan, master

    Air Force Military Medical University, China

    PRINCIPAL INVESTIGATOR
  • Xia Li, master

    Xian Children's Hospital

    PRINCIPAL INVESTIGATOR
  • Junxiang Bao, doctor

    Air Force Military Medical University, China

    STUDY DIRECTOR
  • Yonghong Liu, doctor

    Air Force Military Medical University, China

    STUDY CHAIR

Study Design

Study Type
observational
Observational Model
CASE CROSSOVER
Time Perspective
RETROSPECTIVE
Sponsor Type
OTHER
Responsible Party
PRINCIPAL INVESTIGATOR
PI Title
Professor

Study Record Dates

First Submitted

April 16, 2022

First Posted

April 22, 2022

Study Start

January 1, 2022

Primary Completion

April 1, 2022

Study Completion

April 1, 2022

Last Updated

April 22, 2022

Record last verified: 2022-04

Locations