NCT04706156 is a clinical trial of COVID-19 Vaccine in Oral Manifestations, sponsored by Masaryk University.

Who is sponsoring NCT04706156?

NCT04706156 is sponsored by Masaryk University.

What drugs are being tested in NCT04706156?

Interventions in NCT04706156: COVID-19 Vaccine.

What condition does NCT04706156 study?

NCT04706156 studies Oral Manifestations, Covid19, Vaccine Adverse Reaction.

Is NCT04706156 still recruiting?

NCT04706156 is currently status unknown. Last updated 25 February 2021.

Last reviewed 2021-02-25 · How we verify

NCT04706156

Name: Drug Landscape Pharmaceutical Database
Creator: Drug Landscape
Published: 2026-01-01
License: https://creativecommons.org/licenses/by/4.0/

Oral Side Effects of COVID-19 Vaccine

Status unknown Last updated 25 February 2021

What this trial tests

trial testing COVID-19 Vaccine in Oral Manifestations in 1,540 participants. Status unknown.

Timeline

27 January 2021

Primary endpoint
28 February 2021

31 March 2021

Quick facts

Lead sponsor	Masaryk University
Status	Status unknown
Study type	OBSERVATIONAL
Enrollment	1,540
Start date	27 January 2021
Primary completion	28 February 2021
Estimated completion	31 March 2021
Sites	4 locations across Slovakia, Germany, Czechia

Drugs / interventions tested

COVID-19 Vaccine (COVID-19 Vaccine) — full drug profile →

Conditions studied

Oral Manifestations — all drugs for Oral Manifestations →
Covid19 — all drugs for Covid19 →
Vaccine Adverse Reaction — all drugs for Vaccine Adverse Reaction →

Sponsor

Masaryk University

Who can join

18 and older, any sex, with Oral Manifestations or Covid19. Patients with the condition only — healthy volunteers not accepted.

Sponsor's own description

This study is a multicenter cross-sectional survey-based study conducted in four European countries (Czech Republic, Germany, Slovak Republic, and Turkey). An online questionnaire will be utilized to collect data from volunteer subjects following the STROBE reporting guidelines of cross-sectional studies.

Publications & conference data

6 peer-reviewed publications reference this trial (live from Europe PMC):

Prevalence of COVID-19 Vaccine Side Effects among Healthcare Workers in the Czech Republic.
Riad A, Pokorná A, Attia S, Klugarová J, et al · · 2021 · cited 242× · PMID 33916020 · DOI 10.3390/jcm10071428
Side Effects of mRNA-Based and Viral Vector-Based COVID-19 Vaccines among German Healthcare Workers.
Klugar M, Riad A, Mekhemar M, Conrad J, et al · · 2021 · cited 171× · PMID 34439984 · DOI 10.3390/biology10080752
Side Effects of mRNA-Based COVID-19 Vaccine: Nationwide Phase IV Study among Healthcare Workers in Slovakia.
Riad A, Hocková B, Kantorová L, Slávik R, et al · · 2021 · cited 70× · PMID 34577573 · DOI 10.3390/ph14090873
Safety of ChAdOx1 nCoV-19 Vaccine: Independent Evidence from Two EU States.
Riad A, Pokorná A, Mekhemar M, Conrad J, et al · · 2021 · cited 48× · PMID 34207369 · DOI 10.3390/vaccines9060673
Facial and Oral Manifestations Following COVID-19 Vaccination: A Survey-Based Study and a First Perspective.
Mazur M, Duś-Ilnicka I, Jedliński M, Ndokaj A, et al · · 2021 · cited 27× · PMID 34066995 · DOI 10.3390/ijerph18094965
mRNA-based vs viral vector-based COVID-19 vaccines
· 2021

Verify or expand the search:

Other trials of COVID-19 Vaccine

Trials testing the same drug.

NCT06864143 — A Study to Investigate the Immunogenicity, Reactogenicity, and Safety of mRNA-1083 (Influenza and COVID-19) Vaccine in A · Phase 2 · completed
NCT06683352 — A Study to Learn About Flu and COVID-19 Vaccine Responses in Healthy People · Phase 1, PHASE2 · completed
NCT06163677 — A Study to Look at the Health Outcomes of Patients With COVID-19 and Influenza. · withdrawn
NCT06178991 — A Study to Evaluate the Safety, Tolerability, and Immunogenicity of a Combined Modified RNA Vaccine Candidate Against CO · Phase 3 · completed
NCT06097273 — A Study of mRNA-1083 (SARS-CoV-2 and Influenza) Vaccine in Healthy Adult Participants, ≥50 Years of Age · Phase 3 · completed

Other recruiting trials for Oral Manifestations

Currently open trials in the same condition.

NCT05938166 — The Effects of Using Augmented Reality (AR) System to Train Foreign Care Workers. · NA · recruiting
NCT06961890 — Change in Hygiene and Sugar Comsuption Habits After Use of Cognitive Behavioral Therapy in Pediatric Dentistry in Twins · NA · active not recruiting

Other Masaryk University trials

Trials by the same sponsor.

NCT07019727 — ESSKA/ESMA ACL Injury Prevention Program in Czech Sport · NA · recruiting
NCT07085247 — The Role of Cutibacterium Acnes in the Development of Degenerative Lumbar Intervertebral Disc Disease · recruiting
NCT06887179 — Point-of-Care Ultrasound in Chronic Heart Failure · NA · not yet recruiting
NCT06906614 — Psychophysiological Stress Response in Medical Students During Simulation-Based Communication Training -Study Protocol · not yet recruiting
NCT06426030 — Validation of Czech Language Versions of Questionnaires for ALS Patients' Functional Status and Biomarker Long-term Foll · recruiting

Verify against primary sources

ClinicalTrials.gov — authoritative US registry record
WHO ICTRP — international registry index
EU Clinical Trials Register
Sponsor press releases (Google)

Data sources for this page

Trial protocol + status: ClinicalTrials.gov NCT04706156 (US National Library of Medicine, public domain)
Publications: Europe PMC API search by NCT ID, retrieved 10 June 2026
Drug + disease cross-links: matched in real time against Drug Landscape's normalised drug + company + condition tables
Sponsor: as reported to ClinicalTrials.gov by Masaryk University
Last refreshed: 25 February 2021

Drug Landscape aggregates and links these public records for informational use only. Always verify against the primary source before clinical or regulatory decisions. Canonical URL: https://druglandscape.com/trial/NCT04706156.

Primary sources · FDA · ClinicalTrials.gov · EMA · SEC EDGAR · ChEMBL · Wikidata · full sourcing