Grachev ID

Grosset DG

McKeith IG

O'Brien JT

Oertel WH

Sherwin PF

Tatsch K

Tolosa E

Walker Z

Objectives: To pool clinical trials of similar design to assess overall sensitivity and specificity of ioflupane I123 injection (DaTSCAN or ioflupane (123I)) to detect or exclude a striatal dopaminergic deficit disorder (SDDD), such as parkinsonian syndrome and dementia with Lewy bodies.Design: Pooled analysis of three phase 3 and one phase 4 clinical trials. These four trials were selected because they were the four studies used for the US new drug application to the Food and Drug Administration (FDA).Setting: Multicentre, open-label, non-randomised.Participants: Patients with either a movement disorder or dementia, and healthy volunteers.Interventions: Ioflupane (123I) was administered.Outcome measures: Images were assessed by panels of 3-5 blinded experts and/or on-site nuclear medicine physicians, classified as normal or abnormal and compared with clinical diagnosis (reference standard) to determine sensitivity and specificity.Results: Pooling the four studies, 928 participants were enrolled, 849 were dosed and 764 completed their study. Across all studies, when images were assessed by on-site readers, ioflupane (123I) diagnostic effectiveness had an overall (95% CI) sensitivity of 91.9% (88.7% to 94.5%) and specificity of 83.6% (78.7% to 87.9%). When reads were conducted blindly by a panel of independent experts, the overall sensitivity was 88.7% (86.8% to 90.4%) and specificity was 91.2% (89.0% to 93.0%).Conclusions: In this pooled analysis, the visual assessment of ioflupane (123I) images provided high levels of sensitivity and specificity in detecting the presence/absence of an SDDD. Ioflupane (123I) imaging has the potential to improve diagnostic accuracy in patients with signs and symptoms of a movement disorder and/or dementia

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Is ioflupane I123 injection diagnostically effective in patients with movement disorders and dementia? Pooled analysis of four clinical trials

https://eprint.ncl.ac.uk/fulltext.aspx?url=206477/71ED54EB-1FD7-40B0-80F5-30774B71361B.pdf&pub_id=206477

Is ioflupane I123 injection diagnostically effective in patients with movement disorders and dementia? Pooled analysis of four clinical trials

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