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Quinidine therapy in Brugada Syndrome

Investigating non-invasive markers to determine the effect of quinidine treatment in patients with Brugada Syndrome.

Status
Not yet recruiting
Phases
Phase 4
Study type
Interventional
Source
ANZCTR
Registry ID
ACTRN12620000934943
Acronym
QUIET BrS
Enrollment
15
Registered
2020-09-18
Start date
2020-10-05
Completion date
2021-04-05
Last updated
2020-09-28

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

None listed

Brief summary

Quinidine is the only drug shown to reduce the risk of dangerous irregular heart rhythms in Brugada Syndrome. While studies have shown invasive electrophysiology studies can be useful in assessing response to quinidine in Brugada Syndrome, currently, there is no definitive way to monitor drug effect in an individual. The QUIET BrS Study will investigate the effect of quinidine on a variety of clinical parameters in patients with Brugada syndrome. We seek to identify non-invasive markers of quinidine effect in patients with Brugada Syndrome which could be used to develop a non-invasive strategy for monitoring medical therapy in these patients and reduce the need for invasive procedures.

Interventions

Hydroquinidine 300mg, oral capsule, twice daily For 2 weeks Adherence will be monitored by patient report and tablet return. Serum quinidine levels will also be performed. This is a non-randomised trial.

Sponsors

Sydney Local Health District
Lead SponsorGovernment body

Study design

Allocation
Non-randomised trial
Intervention model
Single group
Primary purpose
Treatment
Masking
Open (masking not used)

Eligibility

Sex/Gender
All
Age
18 Years to No maximum
Healthy volunteers
No

Inclusion criteria

Diagnosis of Brugada Syndrome

Exclusion criteria

Current treatment with drug known to prolong QT interval Baseline QTc >450msec for men, > 460msec for women Baseline QRS > 130msec Baseline PR >200msec Patients taking medications known to interact with quinidine Known hypersensitivity to quinidine

Outcome results

None listed

Source: ANZCTR · Data processed: Feb 4, 2026