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Recruitment status Terminated
Unique ID issued by UMIN UMIN000039355
Receipt No. R000044744
Scientific Title Assessment of AMPA receptor density in patients with ASD: a cross-sectional [11C]K-2 PET study
Date of disclosure of the study information 2020/02/01
Last modified on 2020/08/07

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Basic information
Public title Measurement of AMPA receptor density in patients with ASD: a PET study
Acronym AMPA PET study in patients with ASD
Scientific Title Assessment of AMPA receptor density in patients with ASD: a cross-sectional [11C]K-2 PET study
Scientific Title:Acronym AMPA PET study in patients with ASD

Condition Autism spectrum disorder
Classification by specialty
Psychiatry Adult
Classification by malignancy Others
Genomic information NO

Narrative objectives1 To identify brain regions that show association between AMPA receptor density and illness severity
Basic objectives2 Pharmacokinetics
Basic objectives -Others
Trial characteristics_1 Confirmatory
Trial characteristics_2 Explanatory
Developmental phase Not applicable

Primary outcomes AMPA receptor density in right middle frontal gyrus and left superior frontal gyrus and CSS score in the ADOS-2
Key secondary outcomes AMPA receptor density and scores in the following scales:Quick Inventory of Depressive Symptomatology Self-Report (QIDS-SR), Autism-Spectrum Quotient (AQ), Post-traumatic Stress Diagnostic Scale (PDS), Montgomery-Asberg Depression Rating Scale (MADRS), Hamilton Depression Rating Scale (HDRS),Y-BOCS,WAIS-3
Adverse events during 7 days after administration of [11C]K-2

Study type Interventional

Study design
Basic design Single arm
Randomization Non-randomized
Randomization unit
Blinding Open -no one is blinded
Control Uncontrolled
Stratification NO
Dynamic allocation NO
Institution consideration Institution is not considered as adjustment factor.
Blocking NO
Concealment No need to know

No. of arms 1
Purpose of intervention Diagnosis
Type of intervention
Interventions/Control_1 Radiopharmaceutical [11C] K-2 is administered once, intravenously at 370 MBq for 1 minute.

Age-lower limit
20 years-old <=
Age-upper limit
59 years-old >=
Gender Male and Female
Key inclusion criteria (1) Fulfilling the criteria of autism spectrum disorder(ASD)according to the Diagnostic and Statistical Manual of Mental Disorders, Fifth Edition(DSM-5)
(2) Being capable of providing informed consent
Key exclusion criteria (1) being pregnant or breast-feeding, or wishing to become pregnant, (2) being sensitive to alcohol, (3) comorbidity of serious neurological illness, (4) history of epilepsy, (5) use of perampanel or topiramate within 4 weeks, (6) history of substance use disorder for the past 6 months, (7) positive result on urine screening of substances that cause dependence, (8) having a metal object or pace maker in the body, (9) inappropriate size of head, neck, or body for MRI scan, (10) having large tatoo, (11) suffering from serious claustrophobia, (12) presence of significant brain anomaly, (13) abnormal lab results as follows: serum creatinine level of >=1.5, AST of >=150, or ALT of >=150, (14) having participated in any clinical trial that included the use of unapproved nuclear test within 6 months, (15) having participated in any other clinical trial that included intervention, (16) being judged to be inappropriate for participation by a study medical doctor, (17) IQ of <70 on the WAIS-III
Target sample size 30

Research contact person
Name of lead principal investigator
1st name Tomoyuki
Middle name
Last name Miyazaki
Organization Yokohama City University Hospital
Division name Anesthesiology
Zip code 236-0004
Address 3-9 Fukuura,Kanazawa-ku,Yokohama,Kanagawa,J apan
TEL 045-787-2579

Public contact
Name of contact person
1st name Tsuyoshi
Middle name
Last name Eiro
Organization Yokohama City University, School of Medicie
Division name Physiology
Zip code 236-0004
Address 3-9 Fukuura,Kanazawa-ku,Yokohama,Kanagawa,Japan
TEL 045-787-2579
Homepage URL

Institute Department of Physiology,Yokohama City University, School of Medicie

Funding Source
Organization japan agency for medical research and development Strategic Research Program for Brain Science,Takeda Science Foundation,Yokohama City University Hospital advanded medical
Category of Funding Organization Non profit foundation
Nationality of Funding Organization Japan

Other related organizations
Co-sponsor Keio University Hospital,Kyusyu University Hospital,Fukui University Hospital
Name of secondary funder(s)

IRB Contact (For public release)
Organization Yokohama City University Certified Institutional Review Board
Address 3-9 Fukuura,Kanazawa-ku,Yokohama,Kanagawa,Japan
Tel 045-370-7627

Secondary IDs
Secondary IDs YES
Study ID_1 jRCTs031190149
Org. issuing International ID_1 Japan Registry of Clinical Trials
Study ID_2
Org. issuing International ID_2

Institutions 横浜市立大学附属病院(神奈川県)、慶應義塾大学病院(東京都)、九州大学病院(福岡県)、福井大学病院(福井県)

Other administrative information
Date of disclosure of the study information
2020 Year 02 Month 01 Day

Related information
URL releasing protocol
Publication of results Unpublished

URL related to results and publications
Number of participants that the trial has enrolled
Results date posted
Results Delayed
Results Delay Reason
Date of the first journal publication of results
Baseline Characteristics
Participant flow
Adverse events
Outcome measures
Plan to share IPD
IPD sharing Plan description

Recruitment status Terminated
Date of protocol fixation
2019 Year 10 Month 28 Day
Date of IRB
2019 Year 10 Month 28 Day
Anticipated trial start date
2019 Year 10 Month 28 Day
Last follow-up date
2023 Year 03 Month 31 Day
Date of closure to data entry
2023 Year 03 Month 31 Day
Date trial data considered complete
2023 Year 08 Month 31 Day
Date analysis concluded
2023 Year 10 Month 31 Day

Other related information Because this study is described in the jRCT

Management information
Registered date
2020 Year 02 Month 01 Day
Last modified on
2020 Year 08 Month 07 Day

Link to view the page

Research Plan
Registered date File name

Research case data specifications
Registered date File name

Research case data
Registered date File name

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