 Patients in whom TTC was diagnosed will be informed and requested to grant their approval to review their medical records, to collect and analyze personal medical information, while maintaining the confidentiality of the records at all times. Subjects will be asked to agree to perform a cancer screening during index hospitalization and will also be asked to agree to be contacted during the 5-year follow-up period. Informed consent will be requested after the index procedure cardiac catheterization for suspected acute coronary syndrome proving presence of TTC and the informed consent form ICF has to be signed prior to entering subjects data in the database or prior to any follow-up contact, whichever occurs first. 