Subjects receiving class III antiarrhythmic medications Patients with ventricular tachycardia or supraventricular tachycardia that requires treatment with a class Ia antiarrhythmic drug or class III antiarrhythmic drug Patients already taking class Ic or III antiarrhythmic drugs Patients must not be on treatment with class Ia or class III antiarrhythmic drugs Subjects receiving class IA (quinidine, procainamide) or class III (dofetilide, amiodarone, sotalol) antiarrhythmic agents Patients receiving class IA (quinidine, procainamide) or class III (dofetilide, amiodarone, sotalol) antiarrhythmic agents Patients receiving class IA (quinidine, procainamide) or class III (dofetilide, amiodarone, sotalol) antiarrhythmic agents Patients receiving class IA (quinidine, procainamide) or class III (dofetilide, amiodarone, sotalol) antiarrhythmic agents Patients receiving class IA (quinidine, procainamide) or class III (dofetilide, amiodarone, sotalol) antiarrhythmic agents Subjects receiving class IA (quinidine, procainamide) or class III (dofetilide, amiodarone, sotalol) antiarrhythmic agents Cardiac disease that would preclude the use of any of the drugs included in the GI002 treatment regimen; this includes but is not limited to:\r\n* Clinically unstable cardiac disease, including unstable atrial fibrillation, symptomatic bradycardia, unstable congestive heart failure, active myocardial ischemia, or indwelling temporary pacemaker\r\n* Ventricular tachycardia or supraventricular tachycardia that requires treatment with class Ia antiarrhythmic drugs (e.g., quinidine, procainamide, disopyramide) or class III antiarrhythmic drug (e.g., sotalol, amiodarone, dofetilide); use of other antiarrhythmic drugs is permitted\r\n* Second- or third-degree atrioventricular (AV) block unless treated with a permanent pacemaker\r\n* Complete left bundle branch block (LBBB)\r\n* History of long QT syndrome\r\n* Corrected QT (QTc) >= 450ms Major cardiac-related diseases, medications, or laboratory abnormalities including the following: a) clinically unstable cardiac disease, including unstable atrial fibrillation, symptomatic bradycardia, unstable congestive heart failure, active myocardial ischemia, or indwelling temporary pacemaker, b) ventricular tachycardia or a supraventricular tachycardia that requires treatment with a class Ia antiarrhythmic drug (eg, quinidine, procainamide, disopyramide) or class III antiarrhythmic drug (eg, sotalol, amiodarone, dofetilide); use of other antiarrhythmic drugs is permitted; c) use of medications that have been linked to the occurrence of torsades de pointes, d) second- or third-degree atrioventricular (AV) block unless treated with a permanent pacemaker, e) complete left bundle branch block (LBBB), f) history of long QT Syndrome or a family member with this condition, g) if baseline QTc > 470 ms, average of triplicate electrocardiogram (ECG) recordings is necessary; if average value of QTc is > 470 ms, patient is ineligible for the study; h) serum potassium, magnesium, and calcium levels outside the laboratory's reference range Serious cardiac illness, defined as follows:\r\n* Clinically unstable cardiac disease, including unstable atrial fibrillation, symptomatic bradycardia, unstable congestive heart failure, active myocardial ischemia, or indwelling temporary pacemaker\r\n* Ventricular tachycardia or a supraventricular tachycardia that requires treatment with a class Ia antiarrhythmic drug (eg, quinidine, procainamide, disopyramide) or class III antiarrhythmic drug (e.g. sotalol, amiodarone, dofetilide); use of other antiarrhythmic drugs is permised\r\n* Use of medications that have been linked to the occurrence of torsades de pointes; investigators should note that Zofran (ondansetron) has been linked to corrected QT (QTc) prolongation and the occurrence of torsades de pointes; therefore it should not be used in patients being treated with ganetespib; the use of all other serotonin 5 HT3 antagonists is acceptable (e.g., palonosetron, granisetron, tropisetron)\r\n* Second-or third degree atrioventricular block (AV block) unless treated with a permanent pacemaker\r\n* Complete left bundle branch block (LBBB)\r\n* History of long QT syndrome or a family member with this condition Known serious cardiac illness or medical conditions, including but not limited to:\r\n* Clinically unstable cardiac disease, including unstable atrial fibrillation, symptomatic bradycardia, unstable congestive heart failure, active myocardial ischemia, or indwelling temporary pacemaker\r\n* Ventricular tachycardia or a supraventricular tachycardia that requires treatment with a class Ia antiarrhythmic drug (eg, quinidine, procainamide, disopyramide) or class III antiarrhythmic drug (eg, sotalol, amiodarone, dofetilide); use of other antiarrhythmic drugs is permitted\r\n* Use of medications that have been linked to the occurrence of torsades de pointes\r\n* Second- or third-degree atrioventricular (AV) block unless treated with a permanent pacemaker\r\n* Complete left bundle branch block (LBBB)\r\n* History of long QT Syndrome or a family member with this condition\r\n* Corrected QT (QTc) > 470 ms (average of triplicate electrocardiogram [ECG] recordings); a consistent method of QTc calculation is recommended for each patient’s QTc measurements; QTcF (Fridericia’s formula) is preferred\r\n* Serum potassium, magnesium, and calcium levels outside the laboratory’s reference range Known serious cardiac illness or medical conditions, including but not limited to:\r\n* Clinically unstable cardiac disease, including unstable atrial fibrillation, symptomatic bradycardia, unstable congestive heart failure, active myocardial ischemia, or indwelling temporary pacemaker\r\n* Ventricular tachycardia or a supraventricular tachycardia that requires treatment with a class Ia antiarrhythmic drug (e.g., quinidine, procainamide, disopyramide) or class III antiarrhythmic drug (e.g., sotalol, amiodarone, dofetilide); use of other antiarrhythmic drugs is permitted\r\n* Use of medications that have been linked to the occurrence of Torsades de pointes \r\n* Second- or third-degree atrioventricular (AV) block unless treated with a permanent pacemaker\r\n* Complete left bundle branch block (LBBB)\r\n* History of long QT syndrome or a family member with this condition\r\n* Corrected QT (QTc) > 470 ms (average of triplicate electrocardiogram [ECG] recordings); a consistent method of QTc calculation must be used for each patient’s QTc measurements; QTcF (Fridericia’s formula) is preferred\r\n* Serum potassium, magnesium, or calcium levels in the following ranges:\r\n** Potassium < 3.4 or > 5.1 mmol/L\r\n** Magnesium < 1.4 or > 2.4 mg/dL\r\n** Calcium < 8.9 or > 10.5 mg/dL Patients with known serious cardiac illness or medical conditions, including but not limited to:\r\n* Clinically unstable cardiac disease, including unstable atrial fibrillation, symptomatic bradycardia, unstable congestive heart failure, unstable angina or history of myocardial infarct within 6 months prior to enrollment, or indwelling temporary pacemaker\r\n* Ventricular tachycardia or a supraventricular tachycardia that requires treatment with antiarrhythmic agents\r\n* Second- or third-degree atrioventricular block unless treated with a permanent pacemaker\r\n* Complete left bundle branch block\r\n* History of long QT syndrome or a family member with this condition History of clinically significant cardiac dysfunction, including: \r\n* Unstable angina\r\n* Unstable atrial fibrillation\r\n* Symptomatic bradycardia\r\n* Indwelling temporary pacemaker\r\n* History of myocardial infarction (MI) within 6 months prior to first study treatment\r\n* History of symptomatic congestive heart failure (CHF) (grade > 3 by NCI CTCAE or class > II by New York Heart Association [NYHA] criteria)\r\n* Ventricular tachycardia or a supraventricular tachycardia that requires treatment with a class 1a antiarrhythmic drug (e.g. quinidine, procainamide, disopyramide) or class III antiarrhythmic drug (e.g. sotalol, amiodarone, dofetilide); use of other antiarrhythmic drugs is permitted\r\n* Second or third degree atrioventricular (AV) block unless treated with a permanent pacemaker\r\n* Complete left bundle branch block (LBBB)\r\n* History of long QT syndrome or a family member with this condition