Study to Evaluate the Safety, Biodistribution, Radiation Dosimetry and Tumor Imaging Potential of [131I]-SGMIB Anti-HER2 VHH1 in Healthy Volunteers and Breast Cancer Patients

Inclusion Criteria

Subjects will only be included in the study if they meet all of the following criteria:

• Subjects who have given informed consent
• Subjects that agree not to drink alcoholic beverages or use any drugs during the study
• Subject with blood parameters within normal ranges
• Age: at least 18 years old

Patients will only be included in the study if they meet all of the following criteria:

• Patients who have given informed consent
• Patients that agree not to drink alcoholic beverages or use any drugs during the study
• Age: at least 18 years old
• Patients with local, locally advanced or metastatic HER2+ breast carcinoma as diagnosed on biopsied tissue by immunohistochemistry or fluorescence in situ hybridization (FISH).

Exclusion Criteria

Patients will not be included in the study if one of the following criteria applies:

• Pregnant patients
• Breast feeding patients
• Patients with occupational exposure to ionizing irradiation
• Patients with previous thyroid disorders
• Patients that received radiolabeled compounds with a long half-life (>7h) for diagnostic or therapeutic purposes within the last 2 days.
• Patients with absolute contra-indications for thyroid blockage with potassium iodide.
• Patients with abnormal liver: ALT/AST > 2 times normal values; bilirubin > 1.5 time normal values.
• Patients with abnormal kidney function: 7h) for diagnostic or therapeutic purposes within the last 2 days.
• Subjects with absolute contra-indications for thyroid blockage with potassium iodide.
• Subjects with abnormal liver: ALT/AST > 2 times normal values; bilirubin > 1.5 time normal values.
• Subjects with abnormal kidney function: < 50 ml/min/1,73 m2
• Subjects with recent (< 1 week) gastrointestinal disorders (CTCAE v4.0 grade 3 or 4) with diarrhea as major symptom
• Subjects with any serious active infection
• Subjects who have any other life-threatening illness or organ system dysfunction, which in the opinion of the investigator would either compromise subject safety or interfere with the evaluation of the safety of the test radiopharmaceutical
• Subjects who cannot communicate reliably with the investigator
• Subjects who are unlikely to cooperate with the requirements of the study
• Subjects at increased risk of death from a pre-existing concurrent illness
• Subjects who participated already in this study
• Subjects who participated in a previous trial with Anti-HER2 VHH1