Table 1

Baseline clinical characteristics

Overall (n = 429)Non-sustained VA (n = 326)Sustained VA (n = 103)P-value
Demographics and genetics
Age at diagnosis (years)43.1 ± 15.844.1 ± 15.740.1 ± 16.00.025
Male sex235 (54.8)159 (48.8)76 (73.8)<0.001
Proband status278 (64.8)197 (60.4)81 (78.6)0.001
(Likely) pathogenic variants (n = 282)198 (46.2)150 (46.0)48 (46.6)0.480
Genotype0.302
 PKP2111 (25.6)84 (25.8)27 (26.2)
 DSP38 (8.9)33 (10.1)5 (4.9)
 DSG227 (6.3)22 (6.7)5 (4.9)
 DSC23 (0.7)1 (0.3)2 (1.9)
 JUP0 (0.0)0 (0.0)0 (0.0)
 TMEM4310 (2.3)4 (1.2)6 (5.8)
 PLN3 (0.7)3 (0.9)0 (0.0)
Multiple mutations6 (1.4)3 (0.9)3 (2.9)
Clinical history
Recent cardiac syncope (n = 424)37 (8.6)16 (4.9)21 (20.4)<0.001
ECG/continuous ECG monitoring
TWI in ≥3 precordial leads (n = 409)250 (58.3)187 (57.4)63 (61.2)0.295
TWI in ≥2 inferior leads (n = 403)109 (25.4)81 (24.8)28 (27.2)0.589
PVC count (n = 324)1434 (439–3601)1354 (400–3719)1676 (602–3492)0.160
NSVT (n = 359)148 (34.5)105 (32.2)43 (41.7)0.001
Imaging
RVEF (%) (n = 410)45 (36–53)47 (38–53)40 (35–48.5)<0.001
LVEF (%) (n = 404)57 (51–60)57 (51–61)57 (50–60)0.049
Treatment at baseline
ICD175 (40.8)113 (34.7)62 (60.2)<0.001
Anti-arrhythmic drugs (n = 408)0.041
Amiodarone23 (6.0)16 (4.9)10 (9.8)
Sotalol79 (18.4)55 (16.9)24 (23.3)
Propafenone/flecainide15 (3.5)9 (2.8)6 (5.8)
β-blockers (n = 407)206 (48.0)156 (47.9)50 (48.5)0.50
Follow-up5.02 (2.05–7.90)4.48 (1.86–7.32)6.12 (2.60–10.08)0.002
Overall (n = 429)Non-sustained VA (n = 326)Sustained VA (n = 103)P-value
Demographics and genetics
Age at diagnosis (years)43.1 ± 15.844.1 ± 15.740.1 ± 16.00.025
Male sex235 (54.8)159 (48.8)76 (73.8)<0.001
Proband status278 (64.8)197 (60.4)81 (78.6)0.001
(Likely) pathogenic variants (n = 282)198 (46.2)150 (46.0)48 (46.6)0.480
Genotype0.302
 PKP2111 (25.6)84 (25.8)27 (26.2)
 DSP38 (8.9)33 (10.1)5 (4.9)
 DSG227 (6.3)22 (6.7)5 (4.9)
 DSC23 (0.7)1 (0.3)2 (1.9)
 JUP0 (0.0)0 (0.0)0 (0.0)
 TMEM4310 (2.3)4 (1.2)6 (5.8)
 PLN3 (0.7)3 (0.9)0 (0.0)
Multiple mutations6 (1.4)3 (0.9)3 (2.9)
Clinical history
Recent cardiac syncope (n = 424)37 (8.6)16 (4.9)21 (20.4)<0.001
ECG/continuous ECG monitoring
TWI in ≥3 precordial leads (n = 409)250 (58.3)187 (57.4)63 (61.2)0.295
TWI in ≥2 inferior leads (n = 403)109 (25.4)81 (24.8)28 (27.2)0.589
PVC count (n = 324)1434 (439–3601)1354 (400–3719)1676 (602–3492)0.160
NSVT (n = 359)148 (34.5)105 (32.2)43 (41.7)0.001
Imaging
RVEF (%) (n = 410)45 (36–53)47 (38–53)40 (35–48.5)<0.001
LVEF (%) (n = 404)57 (51–60)57 (51–61)57 (50–60)0.049
Treatment at baseline
ICD175 (40.8)113 (34.7)62 (60.2)<0.001
Anti-arrhythmic drugs (n = 408)0.041
Amiodarone23 (6.0)16 (4.9)10 (9.8)
Sotalol79 (18.4)55 (16.9)24 (23.3)
Propafenone/flecainide15 (3.5)9 (2.8)6 (5.8)
β-blockers (n = 407)206 (48.0)156 (47.9)50 (48.5)0.50
Follow-up5.02 (2.05–7.90)4.48 (1.86–7.32)6.12 (2.60–10.08)0.002

Variables are expressed as frequency (%), mean ± standard deviation, or median (interquartile range). Total number of patients with available data for a given variable are mentioned in parenthesis for variables with missing data.

DSC2, desmocollin-2; DSG2, desmoglein-2; DSP, desmoplakin; ICD, implantable cardioverter-defibrillator; LVEF, left ventricular ejection fraction; NSVT, non-sustained ventricular tachycardia; JUP, junction plakoglobin; PKP2, plakophilin-2; PLN, phospholamban; PVC, premature ventricular complex; RVEF, right ventricular ejection fraction; TMEM43, transmembrane protein 43; TWI, T-wave inversion; VA, ventricular arrhythmia.

Table 1

Baseline clinical characteristics

Overall (n = 429)Non-sustained VA (n = 326)Sustained VA (n = 103)P-value
Demographics and genetics
Age at diagnosis (years)43.1 ± 15.844.1 ± 15.740.1 ± 16.00.025
Male sex235 (54.8)159 (48.8)76 (73.8)<0.001
Proband status278 (64.8)197 (60.4)81 (78.6)0.001
(Likely) pathogenic variants (n = 282)198 (46.2)150 (46.0)48 (46.6)0.480
Genotype0.302
 PKP2111 (25.6)84 (25.8)27 (26.2)
 DSP38 (8.9)33 (10.1)5 (4.9)
 DSG227 (6.3)22 (6.7)5 (4.9)
 DSC23 (0.7)1 (0.3)2 (1.9)
 JUP0 (0.0)0 (0.0)0 (0.0)
 TMEM4310 (2.3)4 (1.2)6 (5.8)
 PLN3 (0.7)3 (0.9)0 (0.0)
Multiple mutations6 (1.4)3 (0.9)3 (2.9)
Clinical history
Recent cardiac syncope (n = 424)37 (8.6)16 (4.9)21 (20.4)<0.001
ECG/continuous ECG monitoring
TWI in ≥3 precordial leads (n = 409)250 (58.3)187 (57.4)63 (61.2)0.295
TWI in ≥2 inferior leads (n = 403)109 (25.4)81 (24.8)28 (27.2)0.589
PVC count (n = 324)1434 (439–3601)1354 (400–3719)1676 (602–3492)0.160
NSVT (n = 359)148 (34.5)105 (32.2)43 (41.7)0.001
Imaging
RVEF (%) (n = 410)45 (36–53)47 (38–53)40 (35–48.5)<0.001
LVEF (%) (n = 404)57 (51–60)57 (51–61)57 (50–60)0.049
Treatment at baseline
ICD175 (40.8)113 (34.7)62 (60.2)<0.001
Anti-arrhythmic drugs (n = 408)0.041
Amiodarone23 (6.0)16 (4.9)10 (9.8)
Sotalol79 (18.4)55 (16.9)24 (23.3)
Propafenone/flecainide15 (3.5)9 (2.8)6 (5.8)
β-blockers (n = 407)206 (48.0)156 (47.9)50 (48.5)0.50
Follow-up5.02 (2.05–7.90)4.48 (1.86–7.32)6.12 (2.60–10.08)0.002
Overall (n = 429)Non-sustained VA (n = 326)Sustained VA (n = 103)P-value
Demographics and genetics
Age at diagnosis (years)43.1 ± 15.844.1 ± 15.740.1 ± 16.00.025
Male sex235 (54.8)159 (48.8)76 (73.8)<0.001
Proband status278 (64.8)197 (60.4)81 (78.6)0.001
(Likely) pathogenic variants (n = 282)198 (46.2)150 (46.0)48 (46.6)0.480
Genotype0.302
 PKP2111 (25.6)84 (25.8)27 (26.2)
 DSP38 (8.9)33 (10.1)5 (4.9)
 DSG227 (6.3)22 (6.7)5 (4.9)
 DSC23 (0.7)1 (0.3)2 (1.9)
 JUP0 (0.0)0 (0.0)0 (0.0)
 TMEM4310 (2.3)4 (1.2)6 (5.8)
 PLN3 (0.7)3 (0.9)0 (0.0)
Multiple mutations6 (1.4)3 (0.9)3 (2.9)
Clinical history
Recent cardiac syncope (n = 424)37 (8.6)16 (4.9)21 (20.4)<0.001
ECG/continuous ECG monitoring
TWI in ≥3 precordial leads (n = 409)250 (58.3)187 (57.4)63 (61.2)0.295
TWI in ≥2 inferior leads (n = 403)109 (25.4)81 (24.8)28 (27.2)0.589
PVC count (n = 324)1434 (439–3601)1354 (400–3719)1676 (602–3492)0.160
NSVT (n = 359)148 (34.5)105 (32.2)43 (41.7)0.001
Imaging
RVEF (%) (n = 410)45 (36–53)47 (38–53)40 (35–48.5)<0.001
LVEF (%) (n = 404)57 (51–60)57 (51–61)57 (50–60)0.049
Treatment at baseline
ICD175 (40.8)113 (34.7)62 (60.2)<0.001
Anti-arrhythmic drugs (n = 408)0.041
Amiodarone23 (6.0)16 (4.9)10 (9.8)
Sotalol79 (18.4)55 (16.9)24 (23.3)
Propafenone/flecainide15 (3.5)9 (2.8)6 (5.8)
β-blockers (n = 407)206 (48.0)156 (47.9)50 (48.5)0.50
Follow-up5.02 (2.05–7.90)4.48 (1.86–7.32)6.12 (2.60–10.08)0.002

Variables are expressed as frequency (%), mean ± standard deviation, or median (interquartile range). Total number of patients with available data for a given variable are mentioned in parenthesis for variables with missing data.

DSC2, desmocollin-2; DSG2, desmoglein-2; DSP, desmoplakin; ICD, implantable cardioverter-defibrillator; LVEF, left ventricular ejection fraction; NSVT, non-sustained ventricular tachycardia; JUP, junction plakoglobin; PKP2, plakophilin-2; PLN, phospholamban; PVC, premature ventricular complex; RVEF, right ventricular ejection fraction; TMEM43, transmembrane protein 43; TWI, T-wave inversion; VA, ventricular arrhythmia.

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