A Study to Evaluate the Safety, Biodistribution, Internal Radiation Dosimetry, and Effective Dose of DaTSCAN™ Ioflupane (123I) Injection in Chinese Healthy Volunteers.

• DaTSCAN™ Ioflupane (123I) Injection (Drug), also known as Ioflupane (123I): Each participant will receive a single administration of DaTSCAN™ ioflupane (123I) injection by bolus IV injection with a nominal iodine (123I) activity of 111 MBq ±10%, in a maximum volume of 5 mL.

Primary outcomes

• Number of Participants With Adverse Events (AEs) [Baseline up to 2 weeks after IMP administration (i.e., up to 16 days)]: An AE was defined as any untoward medical occurrence in participants or clinical investigation participant which did not necessarily have to have been related to the investigational medical product (IMP). AEs were recorded from time of informed consent through the follow-up visit at 2 weeks (±2 days) after IMP administration.
• Change From Baseline in Tolerability Questionnaire Score at Approximately 15 Minutes, 1, 4, 24, 48 Hours After DaTSCAN™ Ioflupane (123I) Injection as Measured by VAS (Visual Analogue Scale) [1 hour before injection (baseline), and at approximately 15 minutes, 1, 4, 24, 48 hours after DaTSCAN™ ioflupane (123I) injection]: Tolerability questionnaire evaluated participants mood, pain at injection site, itchiness of injection site, loss of function at injection site and quality of sleep using 100 millimeter (mm) VAS. VAS is a continuous scale comprised of a horizontal line, usually 100 mm in length, where "0" stands for bad, and 100 mm stands for good. Higher score indicated better health outcomes.
• Number of Participants With Clinically Significant Change From Baseline in Physical Examination Findings Pre-specified Timepoints [Baseline, 4 hours after injection and 2 weeks after DaTSCAN™ ioflupane (123I) injection (i.e., up to 16 days)]: Physical examination included recording an assessment for the presence of abnormalities of the following: general appearance, skin, lungs, cardiovascular system, back and spine, abdomen, extremities, lymph nodes, and neurological exam. Clinical significance was determined by investigator.
• Change From Baseline in Hematology Parameters at Pre-specified Timepoints [Baseline, and at approximately 3 hours, 48 hours, and 2 weeks after DaTSCAN™ ioflupane (123I) injection (i.e., up to 16 days)]: Change from baseline in activated partial thromboplastin time, prothrombin time, thrombin time were reported.
• Change From Baseline in Hematology Parameter-C Reactive Protein at Pre-specified Timepoints [Baseline, and at approximately 3 hours, 48 hours, and 2 weeks after DaTSCAN™ ioflupane (123I) injection (i.e., up to 16 days)]: Change from baseline in C reactive protein were reported.
• Change From Baseline in Hematology Parameter-Hematocrit at Pre-specified Timepoints [Baseline, and at approximately 3 hours, 48 hours, and 2 weeks after DaTSCAN™ ioflupane (123I) injection (i.e., up to 16 days)]: Change from baseline in hematocrit were reported.
• Change From Baseline in Hematology Parameter-Erythrocytes at Pre-specified Timepoints [Baseline, and at approximately 3 hours, 48 hours, and 2 weeks after DaTSCAN™ ioflupane (123I) injection (i.e., up to 16 days)]: Change from baseline in erythrocytes were reported.
• Change From Baseline in Hematology Parameters- Leukocytes, Platelets at Pre-specified Timepoints [Baseline, and at approximately 3 hours, 48 hours, and 2 weeks after DaTSCAN™ ioflupane (123I) injection (i.e., up to 16 days)]: Change from baseline in leukocytes, platelets timepoints were reported.
• Change From Baseline in Hematology Parameters- Fibrinogen, Hemoglobin at Pre-specified Timepoints [Baseline, and at approximately 3 hours, 48 hours, and 2 weeks after DaTSCAN™ ioflupane (123I) injection (i.e., up to 16 days)]: Change from baseline in fibrinogen, hemoglobin were reported.
• Change From Baseline in Serum Chemistry Parameters- Albumin, Protein at Pre-specified Timepoints [Baseline, and at approximately 3 hours, 48 hours, and 2 weeks after DaTSCAN™ ioflupane (123I) injection (i.e., up to 16 days)]: Change from baseline in albumin, protein were reported.
• Change From Baseline in Serum Chemistry Parameters- Thyroxine, Free and Triiodothyronine, Free at Pre-specified Timepoints [Baseline, and at 48 hours after DaTSCAN™ ioflupane (123I) injection]: Change from baseline in thyroxine, free and triiodothyronine, free were reported.
• Change From Baseline in Serum Chemistry Parameters at Pre-specified Timepoints [Baseline, and at approximately 3 hours, 48 hours, and 2 weeks after DaTSCAN™ ioflupane (123I) injection (i.e., up to 16 days)]: Change from baseline in alanine aminotransferase, alkaline phosphatase, aspartate aminotransferase, creatine kinase, gamma glutamyl transferase, lactate dehydrogenase were reported.
• Change From Baseline in Serum Chemistry Parameters- Thyroxine and Triiodothyronine at Pre-specified Timepoints [Baseline, and at 48 hours after DaTSCAN™ ioflupane (123I) injection]: Change from baseline in thyroxine and triiodothyronine were reported.
• Change From Baseline in Serum Chemistry Parameters- Bilirubin, Creatinine, Direct Bilirubin, and Urate at Pre-specified Timepoints [Baseline, and at approximately 3 hours, 48 hours, and 2 weeks after DaTSCAN™ ioflupane (123I) injection (i.e., up to 16 days)]: Change from baseline in bilirubin, creatinine, direct bilirubin, and urate were reported.
• Change From Baseline in Serum Chemistry Parameters- Bicarbonate, Calcium, Chloride, Glucose, Phosphate, Potassium, Sodium, Urea Nitrogen at Pre-specified Timepoints [Baseline, and at approximately 3 hours, 48 hours, and 2 weeks after DaTSCAN™ ioflupane (123I) injection (i.e., up to 16 days)]: Change from baseline in bicarbonate, calcium, chloride, glucose, phosphate, potassium, sodium, urea nitrogen were reported.
• Change From Baseline in Serum Chemistry Parameters- Thyrotropin at Pre-specified Timepoints [Baseline, and at 48 hours after DaTSCAN™ ioflupane (123I) injection]: Change from baseline in thyrotropin were reported.
• Change From Baseline in Serum Chemistry Parameters- Amylase at Pre-specified Timepoints [Baseline, and at approximately 3 hours, 48 hours, and 2 weeks after DaTSCAN™ ioflupane (123I) injection (i.e., up to 16 days)]: Change from baseline in amylase were reported.
• Number of Participants With Clinically Significant Abnormal Urinalysis Parameters - pH and Specific Gravity at Pre-specified Timepoints [Baseline, and at approximately 3 hours, 48 hours, and 2 weeks after DaTSCAN™ ioflupane (123I) injection (i.e., up to 16 days)]: Number of participants with clinically significant abnormal pH and specific gravity were reported. Clinical significance was determined by investigator.
• Number of Participants Who Reported Abnormal Injection Site Monitoring Findings at Pre-specified Timepoints [Baseline, up to 4 hours after DaTSCAN™ ioflupane (123I) injection]: Any radiopharmaceutical extravasation, bleeding, hematoma, redness, infection, or other findings were considered as abnormal findings.
• Change From Baseline in Vital Sign-Systolic Blood Pressure at Pre-specified Timepoints [Baseline, 10, 20, 30 minutes and 1, 2, 4, 24, 48 hours and 2 weeks after DaTSCAN™ ioflupane (123I) injection (i.e., up to 16 days)]: Change from baseline in systolic blood pressure were reported.
• Change From Baseline in Vital Sign-Diastolic Blood Pressure at Pre-specified Timepoints [Baseline, 10, 20, 30 minutes and 1, 2, 4, 24, 48 hours and 2 weeks after DaTSCAN™ ioflupane (123I) injection (i.e., up to 16 days)]: Change from baseline in diastolic blood pressure were reported.
• Change From Baseline in Vital Sign-Heart Rate at Pre-specified Timepoints [Baseline, 10, 20, 30 minutes and 1, 2, 4, 24, 48 hours and 2 weeks after DaTSCAN™ ioflupane (123I) injection (i.e., up to 16 days)]: Change from baseline in heart rate were reported.
• Change From Baseline in Vital Sign-Temperature at Pre-specified Timepoints [Baseline, 10, 20, 30 minutes and 1, 2, 4, 24, 48 hours and 2 weeks after DaTSCAN™ ioflupane (123I) injection (i.e., up to 16 days)]: Change from baseline in temperature were reported.
• Change From Baseline in Vital Sign-Respiratory Rate at Pre-specified Timepoints [Baseline, 10, 20, 30 minutes and 1, 2, 4, 24, 48 hours and 2 weeks after DaTSCAN™ ioflupane (123I) injection (i.e., up to 16 days)]: Change from baseline in respiratory rate were reported.
• Change From Baseline in Oxygen Saturation at Pre-specified Timepoints [Baseline, 10, 20, 30 minutes and 1, 2, 4, 24, 48 hours and 2 weeks after DaTSCAN™ ioflupane (123I) injection (i.e., up to 16 days)]: Change from baseline in oxygen saturation were reported.
• Change From Baseline in Electrocardiogram (ECG) Findings at Pre-specified Timepoints [Baseline, 2 and 5 hours after DaTSCAN™ ioflupane (123I) injection]: Change from baseline in PR interval, QRS interval, QT interval, QTC interval, RR interval, QTCF interval, QTCB interval were reported.

Secondary outcomes

• Biodistribution Measured by Decay Corrected Percentage Injected Activity (%IA) in Blood (Plasma and Whole Blood) [Pre-dose, 5, 15, 30 minutes and 1, 2, 3, 4, 5, 24, and 48 hours after DaTSCAN™ ioflupane (123I) injection]: The decay-corrected %IA was measured by planar scintigraphy. The biodistribution as measured by the decay-corrected %IA in the plasma and whole blood at specified timepoints were reported.
• Biodistribution Measured by Decay Corrected Percentage Injected Activity (%IA) in Whole Body Image [10 minutes and 1, 2, 4, 5, 24, and 48 hours after DaTSCAN™ ioflupane (123I) injection]: The decay-corrected %IA was measured by planar scintigraphy. The biodistribution as measured by the decay-corrected %IA in the whole-body image which included background, heart, intestines, liver, lungs, salivary glands, stomach, striatum, thyroid, whole body, whole brain) at specified timepoints were reported.
• Biodistribution by Source Regions Measured by Decay Corrected Normalized Cumulative Activity [Up to 48 hours after DaTSCAN™ ioflupane (123I) injection]: Biodistribution measured by decay corrected normalized cumulative activity in bladder content, brain, gallbladder, liver, lower large intestine, lungs, remainder, small intestine, upper large intestine was reported.
• Biodistribution as Measured by Decay-corrected Cumulative 123I Activity Concentration in Excreted Urine [10 minutes and 1, 2, 3, 4, 5, 5 to 24, and 24 to 48 hours after DaTSCAN™ ioflupane (123I) injection]: Excretion of 123I following the IV administration of ioflupane (123I) Injection was determined by measuring the 123I activity within the intestinal contents and the sum of the 123I activities in the voided urine up to 48 hours post-injection.
• Normalized Organ Absorbed Doses as Measured by Radiation Dosimetry [Up to 48 hours after DaTSCAN™ ioflupane (123I) injection]: Sex-averaged normalized organ absorbed doses calculated according to Medical Internal Radiation Dose (MIRD) method.
• Effective Dose (ED) of Ioflupane (123I) Injection After IV Administration [Up to 48 hours after DaTSCAN™ ioflupane (123I) injection]: The ED per unit of administered activity was evaluated from the ensemble of absorbed dose data.

Sex: All, ages: 18 Years to 70 Years, accepts healthy volunteers

Inclusion Criteria:

* Chinese male or female who has agreed to sign and date the written informed consent form
* Age 18-70 years
* Body mass index (BMI) of 18-30 kg/m\^2
* General good state of health as judged by a qualified physician after completing physical examination
* Fit, co-operative, and able to provide consent

Exclusion Criteria:

* Sensitivity to DaTSCAN™ ioflupane (123I) injection or any of its ingredients
* A history of motor disturbances
* A history of pulmonary, cardiovascular, neurological, renal or hepatic, hormonal or coagulation disorders or hyperthyroidism
* A history of drug, alcohol, or solvent abuse
* The subject has been previously enrolled in this study or participated in a clinical study involving an investigational pharmaceutical product within 30 days prior to screening
* Radionuclide injection within a minimum of 5 radioactive half-lives prior to screening
* Use of any medication (except paracetamol \[acetaminophen\] or oral contraceptive), including traditional Chinese medicine, within 2 weeks prior to the imaging visit
* Classification as a radiation worker
* Women of child-bearing potential not accepting a highly effective method of birth control (A woman is considered of child-bearing potential, i.e., fertile, following menarche and until becoming postmenopausal unless permanently sterile. Permanent sterilisation methods include hysterectomy, bilateral salpingectomy and bilateral oophorectomy. Postmenopausal is defined as 12 months with no menses without an alternative medical cause, in International Council on Harmonisation (ICH) M3 (R2); A highly effective method of birth control is defined as one which results in a low failure rate (i.e., less than 1 % per year) when used consistently and correctly, such as implants, injectables, combined oral contraceptives, some intrauterine devices, sexual abstinence or vasectomised partner, in ICH M3 (R2).
* Pregnant or lactating women

Participant flow

Outcome results

• Number of Participants With Adverse Events (AEs) (Primary), Count of participants, Participants: DaTSCAN™ Ioflupane (123I) Injection 7
• Change From Baseline in Tolerability Questionnaire Score at Approximately 15 Minutes, 1, 4, 24, 48 Hours After DaTSCAN™ Ioflupane (123I) Injection as Measured by VAS (Visual Analogue Scale) (Primary), Mean, millimeter (mm): DaTSCAN™ Ioflupane (123I) Injection 0.0 +/- 0.00
• Number of Participants With Clinically Significant Change From Baseline in Physical Examination Findings Pre-specified Timepoints (Primary), Count of participants, Participants: DaTSCAN™ Ioflupane (123I) Injection 0
• Change From Baseline in Hematology Parameters at Pre-specified Timepoints (Primary), Mean, seconds: DaTSCAN™ Ioflupane (123I) Injection 29.68 +/- 2.241
• Change From Baseline in Hematology Parameter-C Reactive Protein at Pre-specified Timepoints (Primary), Mean, milligrams per liter (mg/L): DaTSCAN™ Ioflupane (123I) Injection 0.906 +/- 0.9608
• Change From Baseline in Hematology Parameter-Hematocrit at Pre-specified Timepoints (Primary), Mean, percent of red blood cells: DaTSCAN™ Ioflupane (123I) Injection 0.4184 +/- 0.03175
• Change From Baseline in Hematology Parameter-Erythrocytes at Pre-specified Timepoints (Primary), Mean, 10^12 cells per liter: DaTSCAN™ Ioflupane (123I) Injection 4.711 +/- 0.5148
• Change From Baseline in Hematology Parameters- Leukocytes, Platelets at Pre-specified Timepoints (Primary), Mean, 10^9 cells per liter: DaTSCAN™ Ioflupane (123I) Injection 6.933 +/- 1.6311
• Change From Baseline in Hematology Parameters- Fibrinogen, Hemoglobin at Pre-specified Timepoints (Primary), Mean, grams per liter (g/L): DaTSCAN™ Ioflupane (123I) Injection 2.61 +/- 0.470
• Change From Baseline in Serum Chemistry Parameters- Albumin, Protein at Pre-specified Timepoints (Primary), Mean, gram per liter (g/L): DaTSCAN™ Ioflupane (123I) Injection 45.8 +/- 2.49
• Change From Baseline in Serum Chemistry Parameters- Thyroxine, Free and Triiodothyronine, Free at Pre-specified Timepoints (Primary), Mean, picomoles per liter (pmol/L): DaTSCAN™ Ioflupane (123I) Injection 12.580 +/- 1.8109
• Change From Baseline in Serum Chemistry Parameters at Pre-specified Timepoints (Primary), Mean, international units per Liter (IU/L): DaTSCAN™ Ioflupane (123I) Injection 17.6 +/- 4.72
• Change From Baseline in Serum Chemistry Parameters- Thyroxine and Triiodothyronine at Pre-specified Timepoints (Primary), Mean, nanomoles per litre (nmol/L): DaTSCAN™ Ioflupane (123I) Injection 91.024 +/- 20.5161
• Change From Baseline in Serum Chemistry Parameters- Bilirubin, Creatinine, Direct Bilirubin, and Urate at Pre-specified Timepoints (Primary), Mean, micromole per litre (umol/L): DaTSCAN™ Ioflupane (123I) Injection 15.21 +/- 6.316
• Change From Baseline in Serum Chemistry Parameters- Bicarbonate, Calcium, Chloride, Glucose, Phosphate, Potassium, Sodium, Urea Nitrogen at Pre-specified Timepoints (Primary), Mean, millimoles per liter (mmol/L): DaTSCAN™ Ioflupane (123I) Injection 25.31 +/- 1.912
• Change From Baseline in Serum Chemistry Parameters- Thyrotropin at Pre-specified Timepoints (Primary), Mean, milli-international units per liter: DaTSCAN™ Ioflupane (123I) Injection 2.50395 +/- 2.052725
• Change From Baseline in Serum Chemistry Parameters- Amylase at Pre-specified Timepoints (Primary), Mean, units per liter (U/L): DaTSCAN™ Ioflupane (123I) Injection 77.1 +/- 29.53
• Number of Participants With Clinically Significant Abnormal Urinalysis Parameters - pH and Specific Gravity at Pre-specified Timepoints (Primary), Count of participants, Participants: DaTSCAN™ Ioflupane (123I) Injection 0
• Number of Participants Who Reported Abnormal Injection Site Monitoring Findings at Pre-specified Timepoints (Primary), Count of participants, Participants: DaTSCAN™ Ioflupane (123I) Injection 0
• Change From Baseline in Vital Sign-Systolic Blood Pressure at Pre-specified Timepoints (Primary), Mean, millimeters of mercury (mmHg): DaTSCAN™ Ioflupane (123I) Injection 109.6 +/- 12.43
• 12 more outcome measures not shown.

Adverse events

Time frame: Baseline up to 2 weeks after IMP administration (i.e., up to 16 days)

Other adverse events by term

• Results publication: Zhang M, Wang Y, Wang J, Li X, Li B. Safety, biodistribution and radiation dosimetry of [123I]ioflupane in healthy Chinese volunteers. EJNMMI Res. 2023 Apr 7;13(1):30. doi: 10.1186/s13550-023-00978-3. PMID 37029298

• Study Protocol and Statistical Analysis Plan (PDF, 2020-02-04)

• Biao LI, Principal investigator, Rujin Hospital