Disease	Diagnostic	Prognostic	Therapeutic
SQTS	+	+	+

Recommendation	Consensus statement instruction	Ref.
In any patient satisfying the diagnostic criteria for SQTS (such as Class 1 clinical diagnosisa or SQTS diagnostic score >4b), molecular genetic testing is recommended for the definitive disease associated genes (currently KCNH2, KCNQ1).		17
Testing of KCNJ2 and SLC4A3 may be performed in all index patients in whom a cardiologist has established with a high probability a diagnosis of SQTS, based on examination of the patient’s clinical history, family history, and ECG characteristics obtained at baseline or during ECG Holter recording and exercise stress test (SQTS diagnostic score ≥4).		17 , 217 , 218
Variant‐specific genetic testing is recommended for family members and appropriate relatives following the identification of the disease‐causative variant.		Expert opinion
Predictive genetic testing in related children may be considered in specific settings.		Expert opinion