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Alzheimer's Disease (AD)Early Phase 1NCT06489015

Recombinant Human Serum Albumin in the Treatment of Mild-to-moderate AD (Alzheimer's Disease) Exploratory Clinical Trial

A Early Phase 1 study testing Recombinant Human Serum Albumin in people with Alzheimer's Disease (AD), run by Shenzhen Protgen Co., Ltd. at 5 sites in China.

Completed

Finished. The study has ended and is not enrolling. Results may be posted on the official record.

Official record
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Trial summary

This clinical trial is an open-label, parallel-group, exploratory study of recombinant human serum albumin in patients with mild to moderate Alzheimer's Disease (AD). Read more about this study

Who is it for?
Ages 50 to 85 years
Conditions the study is for
Alzheimer's Disease (AD)
What is being tested?
Recombinant Human Serum Albumin
Type of treatment
Injection or infusion
Could I receive a placebo?
No, everyone receives an active treatment
How many people
30 participants
Where
5 sitesChina
Study dates
27 Aug 2024to 14 Apr 2026
Phase
Early Phase 1
Are there results?
None posted in the registry

Key requirements

Who can take part, as listed by the sponsor. Only the study team can confirm whether you are eligible, so take this list to your doctor.

  • Ages 50 to 85 years
  • All sexes
  • No healthy volunteers
  • Adult, Older adult

Who may be able to join

  • Aged between 50 and 85 years (inclusive), with no gender restrictions;
  • Meet the 2011 National Institute on Aging and Alzheimer's Association (NIA-AA) criteria for "Probable AD Dementia";
  • The severity of the disease was mild or moderate, that is, 1 ≤ Clinical dementia scale total score (CDR-GS) score ≤ 2;
  • Hachinski Ischemia Scale (HIS) ≤ 4;
  • Geriatric Depression Scale (GDS) score between 0 and 20 (inclusive);
  • Memory impairment present for at least 12 months with evidence of progression;
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  • Previous PET CT/MRI scan can be provided to confirm the diagnosis of AD at the time of screening. We may provide qualified head MRI films or head MRI plain scan and oblique coronal hippocampal scan within 12 months: The likelihood of Alzheimer's disease on MRI was highest when there were fewer than or equal to two infarcts larger than 2 cm in diameter and no infarcts in key areas such as the thalamus, hippocampus, entorhinal cortex, parorhinal cortex, angular gyrus, cortex, or other subcortical gray matter nuclei (Medial Temporal Atrophy Visual Rating Scale [MTA] grade of 2 or greater);
  • Female participants must be postmenopausal for at least 24 weeks, have undergone sterilization surgery, or if of childbearing potential, along with fertile males, agree to use effective contraception during the study. Women of childbearing potential or those postmenopausal for less than 24 weeks require a negative pregnancy test at screening;
  • If patients were on Alzheimer's medications such as cholinesterase inhibitors, NMDA receptor antagonists, or Oligomannate capsules, or taking other drugs that could affect cognition (e.g., Ginkgo biloba, Ginkgo leaf extract, Vitamin E, Selegiline, Folic acid, Estrogen, traditional Chinese medicines including compound sea snake capsules, Citicoline, Piracetam, Aniracetam, etc.), they must have been on a stable dose for at least 30 days before screening, with the investigator determining suitability and the patient agreeing to maintain this stable dose throughout the trial;
  • Patients must have a stable and dependable caregiver or adequate care arrangements (a minimum of 4 days weekly, 2 hours daily), with the caregiver willing to assist in the patient's full participation in the trial, including accompanying them to visits and helping with assessment scales;
  • Patients should have an educational level of primary school completion or above, capable of completing cognitive assessments and other tests as required by the protocol;
  • Written informed consent obtained.

Who cannot join

  • Investigators believe that the main causes of cognitive impairment are frontotemporal dementia, dementia with Lewy bodies, vascular dementia, dementia caused by Parkinson's disease, dementia caused by epilepsy, dementia caused by craniocerebral injury, and dementia related to central nervous system infection and immunity;
  • Known history of allergy or allergic reactions to yeast or yeast-derived products, any component of the study formulation, individuals with an allergic constitution (multiple drug or food allergies), a history of severe systemic allergic reactions to biologics, or those deemed unsuitable for trial drug treatment by the investigator;
  • Active or historical cardiovascular disorders at screening or conditions deemed inappropriate for human albumin treatment by the investigator, specifically including but not limited to: hypertension (systolic blood pressure >160 mmHg or diastolic >100 mmHg, unless well-controlled with medication and stable in the investigator's judgment), severe anemia, acute cardiac events, significant heart or pulmonary structural diseases, severe arrhythmias, decompensated heart failure (in normal or high volume states), unstable angina, myocardial infarction within 6 months prior to screening, medically treated tachycardia/bradycardia, third-degree atrioventricular block, etc.;
  • Active metabolic disorders or history thereof at screening, or concurrent renal impairment deemed unsuitable for serum albumin therapy by the investigator, such as diabetic kidney disease, hyperuricemia-related renal injury, sleep apnea-associated renal damage, hyperlipidemia-induced renal impairment, etc.;
  • Presence of severe underlying diseases at screening that the investigator deems inappropriate for study participation, including but not limited to active malignancy, pulmonary edema, bleeding tendencies or active bleeding disorders, uncontrolled infections (including spontaneous bacterial peritonitis), thyroid dysfunction (Grade 3 or higher according to the National Cancer Institute Common Terminology Criteria for Adverse Events [NCI CTCAE], version 5.0), etc.;
  • Positive for hepatitis B surface antigen (HBsAg), positive for hepatitis B core antibody (HBcAb) with detectable hepatitis B virus deoxyribonucleic acid (HBV-DNA), positive for hepatitis C antibody (HCV Ab) with detectable hepatitis C ribonucleic acid (HCV-RNA), positive for human immunodeficiency virus antibody (HIV Ab), or positive for Treponema pallidum (syphilis) antibodies at screening;
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  • Presence of the following laboratory abnormalities at screening:
  • Liver function: Alanine transaminase (ALT) >3 times the upper limit of normal (ULN); Aspartate transaminase (AST) >3 ULN; Total bilirubin (TBIL) >1.5 ULN or deemed unsuitable for the trial by the investigator;
  • Renal function: Creatinine clearance (Ccr) <50 mL/min (calculated using the Cockcroft-Gault formula: Ccr(mL/min) = [(140 - age) × weight(kg)] / [72 × Scr(mg/dL)], multiplied by 0.85 for females);
  • Bone marrow function: Absolute neutrophil count (ANC) <1.5 × 10^9/L; Platelets (PLT) <100 × 10^9/L; Hemoglobin (HGB) <90 g/L;
  • Patients had or had a history of a neurological disease at the time of screening, such as a neurological disease with unstable control;
  • Patients with coexisting psychiatric conditions, including schizophrenia or other psychiatric conditions, bipolar disorder, and depression or delirium not due to Alzheimer's disease, were assessed by the investigator as being ineligible for the trial;
  • Contraindications to MRI scanning, including incompatible cardiac pacemakers/defibrillators, magnetic metal implants, etc.;
  • Irreversible visual or auditory impairments preventing completion of assessments related to cognition, neuropsychiatric symptoms, and activities of daily living;
  • Alcohol or drug abusers;
  • Pregnant or lactating women;
  • Received plasma derivatives (including human albumin) within 3 months prior to screening, history of organ transplantation, or planned to undergo invasive procedures or treatments during the study;
  • Participated in another clinical trial (excluding non-drug intervention trials) within 30 days prior to the screening visit for this trial or planning to participate in another trial during this study;
  • The investigator judges that the AD patient is unlikely to complete the trial, such as poor adherence to medication or scheduled visits.

Trial locations and contacts

5 sites in 1 country.

5 sites in 1 country

China5 sites
  • Clinical Medical College & Affiliated Hospital Of Jiujiang University

    Jiujiang, Jiangxi, 332000

  • Luoyang Third People's Hospital

    Luoyang, Henan, 471002

  • Shanghai Mental Health Center

    Shanghai, Shanghai Municipality, 200000

  • Wuhan Union Hospital of China

    Wuhan, Hubei, 430000

  • The First Affiliated Hospital of Zhengzhou University

    Zhengzhou, Henan, 450000

Other trials in China

About this study

Official title: An Open-label, Parallel-group Exploratory Clinical Trial to Evaluate the Safety and Preliminary Efficacy of Recombinant Human Serum Albumin Injection in the Treatment of Mild-to-moderate Alzheimer's Disease

This clinical trial is an open-label, parallel-group, exploratory study of recombinant human serum albumin in patients with mild to moderate Alzheimer's Disease (AD).

Read the detailed description

This clinical trial is an open-label, parallel-group, exploratory study of recombinant human serum albumin in patients with mild to moderate Alzheimer's Disease (AD). It aims to enroll 30 participants who meet the 2011 National Institute on Aging and Alzheimer's Association (NIA-AA) criteria for "Probable AD Dementia." Participants will be randomized in a 1:1:1 ratio to receive the investigational drug at doses of 20g, 30g, or 40g, for assessments of safety and preliminary efficacy. Stratification factors will be based on the severity classification (mild; moderate) as indicated by the total score on the Clinical Dementia Rating Scale - Global Score (CDR-GS) during the screening period.

Being tested
Recombinant Human Serum Albumin
Medical subject headings
Alzheimer Disease

What participants receive

What participants receive. In a randomised study each person is assigned to one group by chance.

  • Recombinant Human Serum AlbuminDrug

    Each group receives the investigational drug (recombinant human serum albumin), with the distinction being the variation in dosing.

Study groups in NCT06489015
Study groupRoleWhat they receive
20g dose groupExperimentalAdministered intravenously once every 3 weeks, until 25 weeks (or 37 weeks if the treatment period was extended)
Receives: Drug: Recombinant Human Serum Albumin
30g dose groupExperimentalAdministered intravenously once every 3 weeks, until 25 weeks (or 37 weeks if the treatment period was extended)
Receives: Drug: Recombinant Human Serum Albumin
40g dose groupExperimentalAdministered intravenously once every 3 weeks, until 25 weeks (or 37 weeks if the treatment period was extended)
Receives: Drug: Recombinant Human Serum Albumin

What is being measured

The primary outcome is the main question the study is designed to answer.

  1. Adverse Events

    The primary objective of the trial was to evaluate safety according to the type, incidence, and severity of adverse events, which were graded with the use of the NCI CTCAE V5.0.

    Measured: About week 29 or 41(It depends on whether the participant enters the extention treatment period)

Secondary outcomes (5)
  1. The change from baseline in the Alzheimer's Disease Assessment Scale-Cognitive subscale (ADAS-Cog) score at W25 post-treatment.

    The Alzheimer's Disease Assessment Scale - Cognitive Subscale (ADAS-Cog) is an instrument used to assess cognitive function in individuals with Alzheimer's disease or other forms of dementia. The scale ranges from 0 to 75, with lower scores indicating better cognitive function and higher scores indicating more severe cognitive impairment. Therefore, the lower the score on the ADAS-Cog, the better the cognitive performance of the individual being assessed. Conversely, a higher score indicates greater cognitive decline. The minimum possible score on the ADAS-Cog is 0, and the maximum possible score is 75.

    Measured: At Week 25

  2. The changes in Alzheimer's Disease Assessment Scale - Cognitive Subscale (ADAS-Cog) scores from baseline at Weeks 7, 16, 29 (if applicable), 37 (if applicable), and 41 (if applicable) post-treatment.

    The Alzheimer's Disease Assessment Scale - Cognitive Subscale (ADAS-Cog) is an instrument used to assess cognitive function in individuals with Alzheimer's disease or other forms of dementia. The scale ranges from 0 to 75, with lower scores indicating better cognitive function and higher scores indicating more severe cognitive impairment. Therefore, the lower the score on the ADAS-Cog, the better the cognitive performance of the individual being assessed. Conversely, a higher score indicates greater cognitive decline. The minimum possible score on the ADAS-Cog is 0, and the maximum possible score is 75.

    Measured: At Weeks 7, 16, 25, 29 (if applicable), 37 (if applicable), and 41 (if applicable)

  3. The changes in Clinical Dementia Rating Scale - Global Score (CDR-GS) from baseline at Weeks 7, 16, 25, 29 (if applicable), 37 (if applicable), and 41 (if applicable) following treatment initiation.

    The Clinical Dementia Rating - Global Score (CDR-GS) is a tool used by healthcare professionals to assess the severity of dementia in patients. The CDR-GS has a range from 0 to 3, with 0 representing no dementia, 0.5 indicating very mild dementia, 1 indicating mild dementia, 2 indicating moderate dementia, and 3 indicating severe dementia.

    Therefore, the lower the score on the CDR-GS, the better the cognitive and functional abilities of the individual being assessed. Conversely, a higher score indicates more severe dementia. The minimum possible score on the CDR-GS is 0, and the maximum possible score is 3.

    Measured: At Weeks 7, 16, 25, 29 (if applicable), 37 (if applicable), and 41 (if applicable)

  4. The changes in Neuropsychiatric Inventory (NPI) scores from baseline at Weeks 7, 16, 25, 29 (if applicable), 37 (if applicable), and 41 (if applicable) after the commencement of treatment.

    The Neuropsychiatric Inventory (NPI) is a tool used to evaluate neuropsychiatric symptoms in individuals with dementia. A lower score on the NPI indicates fewer or less severe neuropsychiatric symptoms, while a higher score suggests more frequent or severe symptoms. Thus, a lower NPI score is generally considered to be a better outcome. The minimum possible score is 0, and the maximum possible score is 144.

    Measured: At Weeks 7, 16, 25, 29 (if applicable), 37 (if applicable), and 41 (if applicable)

  5. The changes in Alzheimer's Disease Cooperative Study - Activities of Daily Living (ADCS-ADL) ability assessment scale scores from baseline

    The Alzheimer's Disease Cooperative Study - Activities of Daily Living Inventory (ADCS-ADL) is a tool designed to measure the functional ability of individuals with Alzheimer's disease. The ADCS-ADL has a range from 0 to 78, where 0 indicates complete dependence and 78 indicates complete independence. Higher scores on the ADCS-ADL indicate better functional status and ability to perform daily activities independently.ng the start of treatment.

    Measured: At Weeks 7, 16, 25, 29 (if applicable), 37 (if applicable), and 41 (if applicable)

Timeline

From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.

  1. First posted5 Jul 2024
  2. Study start27 Aug 2024
  3. Primary completion14 Apr 2026
  4. Study completion14 Apr 2026

Resources

More details

For doctors and researchers: how the study is designed, who runs it, and its registry IDs.

Study design
Study type
Interventional
Phase
Early Phase 1
Primary purpose
Treatment
Allocation
Randomised
Intervention model
Parallel groups
Masking
None (open label)
Enrolment
30 participants (actual)
IDs, dates and publications
ClinicalTrials.gov ID
NCT06489015
Sponsor's protocol ID
rHSA 2024-01
Status last verified
Aug 2026
First submitted
26 Jun 2024
Last updated
25 Aug 2026
Results posted
No
Data monitoring committee
No
FDA-regulated drug
No
FDA-regulated device
No
Individual data sharing
No

Questions about this trial

What is this clinical trial studying?

A Early Phase 1 study testing Recombinant Human Serum Albumin in people with Alzheimer's Disease (AD), run by Shenzhen Protgen Co., Ltd. at 5 sites in China.

The full registered description is in the About this study section and the official record.

Who may be eligible to take part?

The sponsor lists 12 inclusion and 19 exclusion criteria. Eligibility is decided by the study team after screening, so read the full criteria and contact a listed site.

Is this clinical trial currently recruiting?

The record says: finished, as of the sponsor's last update on 25 Aug 2026. Status can change between updates, so confirm with the study contact before making plans.

Where is the study taking place?

The record lists 5 sites in China. Whether a site is taking part right now should be confirmed with that site. See every site.

What are the possible benefits and risks?

They depend on the study and the treatment, and no study can promise a benefit. The study team explains the known risks during informed consent, before anyone joins; the record itself does not list them.

What does this phase mean?

Early Phase 1 (sometimes called Phase 0) studies give a very small amount of a treatment to a few people, mainly to see how the body handles it.

Not every study follows the same path, and some studies (observational studies, device studies) have no phase.

Are results available for this study?

The study is completed, but results are not available in the source record. That does not mean the treatment did or did not work.

How can a doctor refer a patient or contact the research team?

The record lists no contact. The official record names the sponsor, who can be asked directly. AzTrials does not enrol participants or take referrals.

What does the primary outcome measure?

Adverse Events (time frame: About week 29 or 41(It depends on whether the participant enters the extention treatment period)). It is what the study was designed to measure, not a finding.

Where can I read the original study information?
Does a listing mean the treatment is approved or proven to work?

No. A listing means the study is registered. It does not show that the treatment is safe, works, or is approved by a regulator.

How often is this information updated?

AzTrials copies changed records from ClinicalTrials.gov every night and reloads the whole registry every week. The sponsor last updated this record on 25 Aug 2026.

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