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VostatAD01

TerminatedPhase 1

Clinical Trial to Determine Tolerable Dosis of Vorinostat in Patients With Mild Alzheimer Disease

Multicenter, Open-label Phase Ib Dose-escalation and Dose-confirmational Study for the Tolerability and Safety of N-hydroxy-N'-Phenyl-octanediamide (Vorinostat) in Patients With Mild Alzheimer's Disease

Asset

N-hydroxy-N'-phenyl-octanediamide (Vorinostat)

Listed sites

2

Recruiting sites

-

Enrollment

9

actual

Study population

Alzheimer’s disease

Key I/E criteria

•Alzheimer's disease•MMSE 22-27•MRI contraindications excluded

Primary endpoint

•Determination of the maximum-tolerated dose (MTD) in elderly subjects during

Footprint

Where this trial recruits

Site locations as reported to ClinicalTrials.gov. Site count is not enrollment count; per-site enrollment is not available from source.

Identifiers

Registered as

Eudract number2014-005311-17
NCT IDNCT03056495
Org study IDVostatAD01

Timeline

Milestones

Study first posted2017-02-17actual
Study start2017-09-28actual
Primary completion2024-03-04actual
Study completion2024-03-04actual
Last update posted2024-04-10actual

Assets

Drug assets

N-hydroxy-N'-phenyl-octanediamide (Vorinostat)

Study populations

Who this study enrolls

Alzheimer’s disease

Eligibility

Who can enroll

Minimum age55 Years
Maximum age90 Years
SexAll
Healthy volunteersNot accepted

Inclusion criteria

•written informed consent to participate in the study
•verified capacity to consent by a doctor not involved in the study
•mild Alzheimer's disease (NINCDS / ADRDA criteria and Mini-Mental State Examination (MMSE) 22-27)
•age (including) from 55 to 90 years
•subjects must be able to meet the requirements described in the study protocol
•outpatient living
•Informant lives with subject in the same household
•Rosen modified Hachinski ischemia score ≤4
•concerning only female patients: postmenopausal
•concerning only male patients: commitment to use a suitable contraceptive
•cerebral imaging study (CT or cMRI), which is consistent with a diagnosis of probable Alzheimer's disease (not older than 3 years)

Exclusion criteria

•other neurological and psychiatric diseases explaining cognitive deficits better than an AD diagnosis
•conspicuous MRI / CCT scan explaining the cognitive deficits better than an AD diagnosis
•severe physical, neurological or psychiatric disorders that interfere with the participation in the study
•history of malignant tumors except non- metastasizing basal cell carcinoma of the skin
•history of seizures
•dysphagia leading to the inability to swallow capsules
•untreated severe acute infections with clinical symptoms such as respiratory infections, pneumonia, bronchitis, acute diarrhea, influenza, untreated urinary tract infections
•in the family history, unexplained sudden cases of heart failure before the age of 50 years
•long QT syndrome in the family history
•evidence of QTc prolongation ≥480 ms at screening (Fridericia adjusted QT interval), of arrhythmias especially of severe uncontrolled ventricular arrhythmias or atrial fibrillation in ECG
•not sufficiently treated angina
•heart failure (NYHA III, IV)
•myocardial infarction
•known infection with HBV, HCV and / or HIV
•occurrence of venous thrombosis or embolism
•therapy with antidepressants begun in the last 12 weeks or dose modification of a pre-existing therapy with antidepressants
•antidiabetic treatment begun in the last 12 weeks or dose modification of pre-existing antidiabetic treatment
•long-term use of anti-inflammatory drugs except acetylsalicylic acid for cardiovascular prophylaxis
•current treatment or treatment within the past 12 weeks with HDAC inhibitors (eg valproate)
•taking medication that may increase the dose-dependent side effects myelosuppression or QTc interval prolongation.

These include, but are not limited to:

•Class Ia antiarrhythmic agents such as quinidine, procainamide, disopyramide
•Class III antiarrhythmic drugs such as amiodarone, sotalol, ibutilide
•Class Ic antiarrhythmics such as flecainide, propafenone
•penicillamine
•opioids such as methadone and pyrazolone derivatives such as metamizole and Propyphenazone
•doxorubicin, epirubicin
•macrolides and their analogues such as erythromycin, clarithromycin
•telithromycin
•oxazolidinones such as linezolid
•quinolones such as moxifloxacin, levofloxacin
•fluoxetine, maprotiline
•tricyclic and tetracyclic antidepressants
•chlorpromazine, pimozide, haloperidol, droperidol, ziprasidone and clozapine
•antiemetics
•azole like ketoconazole, fluconazole, voriconazole
•aminocholine such as primaquine
•pentamidine such as quinine, chloroquine
•diaminopyrimidine such as pyrimethamine
•salbutamol and formoterol methotrexate
•azathioprine, cyclosporine Interferon gamma 1b
•alemtuzumab, basiliximab, efalizumab, natalizumab
•sunitinib, nilotinib, lapatinib
•mitoxantrone, Hydroxycarbamide, mercaptopurine
•taking of prescription and non-prescription drugs for cognitive enhancement (except cholinesterase inhibitors and memantine at a stable dose for at least 3 months before baseline)
•therapy with anticoagulants except acetylsalicylic acid
•HbA1c in screening more than 10% above the upper limit of normal
•magnesium, sodium, calcium and potassium levels outside the normal range (at screening and baseline)
•existing anemia with Hb <11 (at screening and baseline)
•existing thrombocytopenia; platelet ≤150.000 / ul, leukocytes ≤ 3.000 / ul, neutrophils absolutely ≤ 1.500 / ul (at screening and baseline)
•prothrombin or INR ≥ 1.5 above the laboratory limit of normal; PTT ≥ 1.5 x above the laboratory limit of normal (at screening and baseline)
•clinically relevant renal and / or hepatic impairment at screening and baseline (total bilirubin ≥ 1.5 x above the upper limit of the norm and / or GPT, AST ≥ 4x above the upper limit of the norm and / or creatinine ≥ 1.5x above the upper limit of the norm and / or creatinine clearance <60 ml / min)
•hematuria> 15 RBCs / mL at screening and baseline
•proteinuria at screening and baseline except in asymptomatic urinary tract infections
•participating in other clinical and therapeutic trials within the last 12 weeks

relevant only for dose confirmation:

•subjects with existing contraindications for performing an MRI if no MRI available from the period of 6 months prior to screening
•cardiac pacemaker
•metal objects in the body, which exclude a 1.5 or 3 T MRI
•claustrophobia

Endpoints (4)

What's being measured

Protocol endpoints and posted registry outcome measures, grouped into outcome categories. Composite endpoints show their component event types. Standard codes (LOINC, SNOMED CT) are shown where available.

Coverage by outcome category

Safety / tolerability / PK
2
Memory
1
Other (unclassified)
1

Memory

1 endpoint
Secondary/protocol endpoint

association of alterations in the genome-wide transcriptome profile with the dose administered, toxicity and treatment response - pharmacodynamics

Time frame:d21 by 4 weeks treatment with MTD

ratio, descriptive

Safety / tolerability / PK

2 endpoints
Secondary/protocol endpoint

Incidence of treatment - Emergent Adverse Events (Safety)

Time frame:during dose escalation and during 4 weeks treatment with MTD every week

event count, event

Secondary/protocol endpoint

Quantification of Vorinostat concentration in blood - pharmacokinetics

Time frame:d21 by 4 weeks treatment with MTD

concentration, descriptive

Other (unclassified)

1 endpoint
Primary/protocol endpoint/low confidence

Determination of the maximum-tolerated dose (MTD) in elderly subjects during dose escalation

Time frame:12 months

descriptive

Publications (1)

Bibliography

Records linked to this trial through ClinicalTrials.gov references, PubMed NCT search, and curated study seeds. 'Canonical' marks design/result papers; others are registry references or candidates.

Registry references + supporting bibliography

Provenance

Sources

Trial identity, design, statusClinicalTrials.gov API v2
Snapshot dateJuly 21, 2026
Endpoint classificationDelfa ADRD endpoint taxonomy
Results tableno registry results posted yet

Trial facts come from public ClinicalTrials.gov records. Endpoint categories are Delfa's classification of those records, not a ClinicalTrials.gov field. All figures reflect the July 21, 2026 snapshot.