Familial long QT syndrome
MONDO:0019171A hereditary cardiac disease characterized by a prolongation of the QT interval at basal ECG and by a high risk of life-threatening arrhythmias.
Also known as: LQTS, Long QT Syndrome, Romano-Ward long QT syndrome, Romano-Ward syndrome, Ward-Romano syndrome, congenital long QT syndrome, familial long QT syndrome, hereditary long QT syndrome
11 clinical trials for this condition and its sub-types, 1 tagged with Familial long QT syndrome itself.
Follow this condition to get notified about new trialsWhere it sits in the disease tree
Browse by category →Sub-types of Familial long QT syndrome
-
Long QT syndrome 3 6 trials
-
Long QT syndrome 2 3 trials
-
Jervell and Lange-Nielsen syndrome 2 trials
2 sub-types
-
Timothy syndrome 1 trial
2 sub-types
- Timothy syndrome, classic type 0 trials · 1 incl. sub-types Sub-types →
- Timothy syndrome, atypical type 0 trials
-
Long QT syndrome 1 1 trial
-
Long QT syndrome 5 0 trials · 1 incl. sub-types
1 sub-type
-
Andersen-Tawil syndrome 0 trials
-
Long QT syndrome 10 0 trials
-
Long QT syndrome 11 0 trials
-
Long QT syndrome 12 0 trials
-
Long QT syndrome 13 0 trials
-
Long QT syndrome 14 0 trials
-
Long QT syndrome 15 0 trials
-
Long QT syndrome 16 0 trials
-
Long QT syndrome 4 0 trials
-
Long QT syndrome 6 0 trials
-
Long QT syndrome 8 0 trials
-
Long QT syndrome 9 0 trials
Most studied deeper sub-types
-
New IVF medium may help those with low fertilization rates
Disease control CompletedThis study tested a ready-to-use calcium ionophore medium (GM508 CultActive) on eggs from 68 IVF patients who had low fertilization rates, poor embryo quality, or were over 40. The medium was applied shortly after sperm injection to try to improve fertilization and embryo develop…
Sponsor: Chang Gung Memorial Hospital • Aim: Disease control
Last updated Jun 27, 2026 11:03 UTC
-
Single-Patient trial tests heart drug for rare genetic syndrome
Symptom relief CompletedThis study tested whether a single intravenous dose of diltiazem, a calcium channel blocker, can shorten the QT interval in adults with Jervell and Lange-Nielsen syndrome, a rare genetic heart condition that increases the risk of dangerous heart rhythms. Only one person participa…
Phase 4 • Sponsor: Vanderbilt University Medical Center • Aim: Symptom relief
Last updated Jun 27, 2026 07:54 UTC
-
Can hormones during pregnancy reshape the Heart's electrical beat?
Knowledge-focused CompletedThis study tracks heart rhythm changes in women from late pregnancy to after delivery, comparing healthy women and those with congenital long QT syndrome, a condition that affects the heart's electrical activity. Researchers use ECGs and blood tests to measure how sex hormones li…
Sponsor: French Cardiology Society • Aim: Knowledge-focused
Last updated Aug 21, 2026 00:00 UTC