Approval Probability 71%
TA Base Rate26%
Adjusted LOA41%
ML RiskLOW_RISK
| NCT ID | Title | Phase | Status | Enrollment | Velocity | Design | Start | Completion | Last Updated | Sites | Countries |
|---|---|---|---|---|---|---|---|---|---|---|---|
| NCT04193527 | A Study to Evaluate the Diagnostic Efficacy of DaTSCAN™ Ioflupane (123I) Injection in Single Photon Emission Computed Tomography (SPECT) for the Diagnosis of Parkinsonian Syndrome (PS) in Chinese Patients | PHASE3 | COMPLETED | 172 | — | — | Jun 28, 2020 | Dec 20, 2021 | Oct 16, 2023 | 10 | China |
Sensitivity was defined as positive percentage agreement and calculated as the number of true positives (TP) / (number of TP + number of false negatives \[FN\]): TP/(TP + FN), and a 2-sided 95% binomial confidence interval constructed around it. Only the participants with a clinical diagnosis of PS were included in the sensitivity analysis. The sensitivity of the blinded independent read of DaTSCAN™ SPECT images in detecting or excluding striatal dopaminergic deficit (SDD), when the clinical diagnosis as established by the investigator was used as the standard of truth, were summarized with by reader. Each participant's SPECT image was read by 3 blinded readers.
Specificity was defined as negative percentage agreement and calculated as the number of true negatives (TN) / (number of TN + number of false positives \[FP\]): TN/(TN + FP), and a 2-sided 95% binomial confidence interval constructed around it. For the specificity analysis, only participants with a clinical diagnosis of ET were included; the HVs were excluded from this analysis. The specificity of the blinded independent read of DaTSCAN™ SPECT images in detecting or excluding striatal dopaminergic deficit (SDD), when the clinical diagnosis as established by the investigator was used as the standard of truth, were summarized with by reader. Each participant's SPECT image was read by 3 blinded readers.
| Arm | Type | Description |
|---|---|---|
| DaTSCAN™ ioflupane (123I) injection | EXPERIMENTAL | Participants with Parkinsonian Syndrome (PS), Essential Tremor (ET), and Healthy Volunteers (HV) received a single dose of DaTSCAN™ ioflupane (123I) injection. Single photon emission computed tomography (SPECT) imaging was performed between 3 to 6 hours post-injection and lasted approximately 20 minutes to 1 hour. |
| Name | Type | Description |
|---|---|---|
| DaTSCAN™ Ioflupane (123I) Injection | DRUG | All participants (Participants with PS, ET, and HV) received a single dose of DaTSCAN™ ioflupane (123I) injection within the range of 111 to 185 megabecquerel (MBq) (3 to 5 millicurie \[mCi\]) per participant at a maximum volume of 5 milliliter \[mL\]) intravenously on Day 1. |
Inclusion Criteria: For all participants: 1. Chinese male or female, aged 40 to 80 years, has agreed to sign and date the written informed consent form. For Healthy Volunteers: 2. Non-patient volunteers with good age-appropriate health as established by clinical examination during screening an...