ClinicalTrials.gg
Not yet recruitingNCT07782476Updated Aug 24, 2026

Study of HXN6005 in Healthy Participants and Patients With Moderate-to-Severe Atopic Dermatitis

A Phase 1/2 interventional study of HXN6005 and Placebo in Health Adult Subjects and Atopic Dermatitis (AD), sponsored by Helixon Biotechnology (Suzhou) Co., Ltd. Not yet recruiting at 1 site in China. Open to participants aged 18 Years to 70 Years, including healthy volunteers. Per ClinicalTrials.gov, last updated 2026-08-24.

Sponsored by Helixon Biotechnology (Suzhou) Co., Ltd · Phase 1/2, Interventional, and Treatment

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Phase
Phase 1/2
Study type
Interventional
Enrollment
67
Allocation
Randomized
Ages
18 Years to 70 Years
Sex
All
01

Where this study stands

Counted across the records on this site · 2026-11-15

Among 205 studies in Dermatitis, Atopic with a site in China — 64 open to participants now, 81 under way, 29 of them phase 3. Dermatitis, Atopic · China.

Planned enrollment
149th of 189
67 · median 165
Started
2026
with 30 others
Phase 1/2
14 of 205
4 open now
Primary completion
2027-10
later than 54 of 80 live
Registered
200th of 205
by date

Among the 205 studies in Dermatitis, Atopic with a site in China, this one is the 149th largest by planned enrollment of the 189 interventional ones that give a count, is one of 31 that started in 2026, is one of 14 in phase 1/2, reaches primary completion later than 54 of the 80 other live ones, and was the 200th registered.

Dermatitis, Atopic

1,592 studies on the registry are indexed under Dermatitis, Atopic; 287 are open to participants now.

Browse Dermatitis, Atopic studies →

Open to participants now

64 of the 205 studies in Dermatitis, Atopic with a site in China are open now. Recruiting first, the newest first:

59 more — sign in →

All 64 open studies →

A study can be open while its sites in China have not opened yet or have stopped. Only those recruiting at a site in China →

Who these studies take

Of the 195 Dermatitis, Atopic studies recruiting now, 83 (43%) set no upper age limit and 96 (49%) stop at 75 or younger; 94 take children under 18; 52 take healthy volunteers.

This study: 18 Years to 70 Years · all sexes · healthy volunteers too.

The full table on the hub →

This tab as a report to print or save as PDF → With an account.

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Watch this landscapeDownload CSVNarrow it in search →With an account: a weekly mail of what changed among 205 studies in Dermatitis, Atopic with a site in China, or all of them as a file.
02

Study summary

This is a Phase I/II, multicenter, randomized, double-blind, placebo-controlled study evaluating HXN6005 in healthy participants and patients with moderate-to-severe atopic dermatitis (AD).

The study consists of three parts: Part A (single ascending dose in healthy participants), Part B (multiple ascending dose in AD patients), and Part C (multiple-dose efficacy and safety assessment in AD patients).

The primary objectives are to assess the safety, tolerability, pharmacokinetics (PK), pharmacodynamics (PD), and preliminary efficacy of HXN6005.

Read the detailed description

Part A (Single Ascending Dose, SAD) is a randomized, double-blind, placebo-controlled, single-dose escalation design conducted in healthy participants. It includes two sequential dose cohorts. A total of 16 healthy participants are planned, with 8 participants per cohort (6 receiving HXN6005 and 2 receiving placebo). Participants receive a single subcutaneous injection of HXN6005 or placebo. All participants are followed for safety, PK, PD, and anti-drug antibody (ADA) assessments.

Part B (Multiple Ascending Dose, MAD) is a randomized, double-blind, placebo-controlled study conducted in patients with moderate-to-severe AD. Part B enrolls 16 patients across two dose cohorts, with 8 patients per cohort (6 receiving HXN6005 and 2 receiving placebo). Patients receive multiple subcutaneous injections of HXN6005 or placebo according to the study schedule.

Part C is a multicenter, randomized, double-blind, placebo-controlled study conducted in patients with moderate-to-severe AD. A total of 35 patients are planned to be randomized into two HXN6005 dose groups and one placebo group, receiving multiple subcutaneous doses according to the study schedule. Regular follow-up visits are conducted to collect efficacy data, safety data, and blood samples for assessment of systemic exposure, immunogenicity, and biomarkers.

03

Conditions studied

  • Health Adult Subjects
  • Atopic Dermatitis (AD)

Browse trials for

04

Who can participate

Ages eligible
18 Years to 70 Years
Sexes eligible
All
Accepts healthy volunteers
Yes

Go through the criteria one by one — yes, no or not sure — and take the list to your doctor or the study team. Kept in this browser only.

Inclusion criteria

  1. Participants must be able to understand and comply with the study requirements and voluntarily sign the form (ICF).
  2. (Healthy Participants) Male or female participants aged 18 to 55 years (inclusive) at the time of signing the ICF.
  3. (Healthy Participants) Male participants weighing ≥ 50.0 kg and female participants weighing ≥ 45.0 kg, with a (BMI) between 18.0 and 28.0 kg/m² (inclusive).
  4. (Patients with AD) Male or female participants aged 18 to 70 years (inclusive) .
  5. (Patients with AD) Participants must have documented AD history, moderate-to-severe disease, and inadequate response to topical therapy at screening.

Exclusion criteria

Exclusion Criteria:

  1. Presence of any disease at randomization, as judged by the investigator.
  2. Known or suspected allergy or intolerance to any component or of HXN6005 injection or placebo.
  3. History of severe drug allergy or systemic anaphylactic reactions, such as anaphylactic shock, laryngeal edema, etc.
  4. Known or suspected history of , or history of invasive opportunistic infections, including infections that are unusually frequent, recurrent, or prolonged in duration as judged by the investigator, even after resolution of the infection.
  5. History of or malignant disease, with the exception of surgically excised cutaneous squamous cell carcinoma in situ, basal cell carcinoma, and cervical carcinoma in situ that have been in complete remission for more than 5 years without any evidence of recurrence.
Terms in these criteria, in plain language(6)

Underlined terms in the criteria open these too. Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.

Informed consent

Before you join, the study team explains what taking part involves — its purpose, what happens, the risks and possible benefits — and answers your questions, so you can decide freely. Consent is usually recorded on a form (the informed consent form, ICF) signed by you or, where the law allows, by someone legally authorised to decide for you.

You can keep asking questions during the study, you are told of new information that matters, and you can choose to leave at any time.

BMI (body mass index)

Weight in kilograms divided by height in metres squared. Example: 70 kg and 1.75 m gives 70 ÷ (1.75 × 1.75) ≈ 22.9.

What counts as overweight or obesity differs between countries (some use lower cut-offs), so go by the range the study states.

Clinically significant

Judged by the study doctor to matter for your health or for the study. It is a doctor’s decision, so ask the study team if you are unsure whether something counts.

Excipients

The other ingredients in a medicine besides the active drug, such as fillers, colours or preservatives.

Immunosuppression

A weakened immune system. It can come from an illness, such as HIV or some blood cancers, or from medicines that turn the immune system down, for example after an organ transplant or for an autoimmune disease; steroids at higher doses count.

Read whether the line is about a condition or about medicines, and which medicines and doses it means.

Cancer (malignancy)

Malignancy means cancer. Criteria about another or earlier malignancy ask whether you have had a different cancer, usually within a set number of years.

Some are commonly allowed, such as treated skin cancers other than melanoma and early cancers removed completely — check the exceptions this study lists.

05

Study design

Phase
Phase 1 / Phase 2
Primary purpose
Treatment
Allocation
Randomized
Intervention model
Parallel assignment
Masking
Triple (Participant, Care provider, Investigator)
Enrollment
67 participants (estimated)

Study arms

  • Experimental
    Part A Single Ascending Dose (SAD)

    Participants will receive a single subcutaneous dose of HXN6005

    Drug: HXN6005

  • Placebo comparator
    Part A Placebo (SAD)

    Participants will receive a single subcutaneous dose of placebo

    Drug: Placebo

  • Experimental
    Part B Multiple Ascending Dose (MAD)

    Participants will receive multiple subcutaneous doses of HXN6005

    Drug: HXN6005

  • Placebo comparator
    Part B Placebo (MAD)

    Participants will receive multiple subcutaneous doses of placebo

    Drug: Placebo

  • Experimental
    Part C Multiple Dose efficacy exploration

    Participants will receive multiple subcutaneous doses of HXN6005

    Drug: HXN6005

  • Placebo comparator
    Part C Multiple Dose placebo-controlled

    Participants will receive multiple subcutaneous doses of placebo

    Drug: Placebo

Interventions

  • DrugHXN6005

    Participants will be enrolled sequentially into one of two ascending dose cohorts and will receive a single subcutaneous dose of HXN6005.

  • DrugPlacebo

    Participants will be enrolled sequentially into one of two ascending dose cohorts and will receive a single subcutaneous dose of placebo.

  • DrugHXN6005

    Participants will be enrolled sequentially into one of two ascending dose cohorts and will receive multiple subcutaneous doses of HXN6005.

  • DrugPlacebo

    Participants will be enrolled sequentially into one of two ascending dose cohorts and will receive multiple subcutaneous doses of placebo.

  • DrugHXN6005

    Participants will be enrolled in parallel into one of two dose cohorts and will receive multiple subcutaneous doses of HXN6005.

  • DrugPlacebo

    Participants will be enrolled in a single cohort and will receive multiple subcutaneous doses of placebo.

06

What researchers measure

Primary outcomes

  1. Part A Adverse events

    Incidence, severity, and causal relationship of Adverse Events (AEs)

    Time frame: Up to day 141

  2. Part B Adverse Events

    Incidence, severity, and causal relationship of Adverse Events (AEs)

    Time frame: Up to day 197

  3. Part C Efficacy

    Change from baseline to Week 16 in the Eczema Area and Severity Index (EASI; range 0-72; higher scores indicate more severe disease) total score among AD participants

    Time frame: Up to day 113

Secondary outcomes

  1. Maximum Observed Plasma Concentration (Cmax)

    The maximum (peak) observed drug concentration in plasma after administration

    Time frame: Up to day 197

  2. Area Under the Plasma Concentration-Time Curve from Time 0 to the Last Quantifiable Concentration (AUC0-t)

    Area under the plasma concentration-time curve from time 0 (pre-dose) to the time of the last measurable (quantifiable) plasma concentration

    Time frame: Up to day 197

  3. Incidence of antidrug antibodies (ADA) against HXN6005

    The incidence of treatment-emergent ADA against HXN6005 was assessed in serum samples

    Time frame: Up to day 197

07

Study locations

1 site
08

References and documents

Individual participant data

Plan to share: No

No publications or documents are linked to this record.

09

Timeline

Tracking since Sep 25, 2026
ElapsedEstimatedEstimated, not yet reachedSimilar studies: half by the dot; the band is the middle halfHalf of similar studies reached it by the dot; the band is the middle half, from a quarter to three quarters

Start is estimated for Sep 2026; primary completion for Oct 2027, 13 months later.

Of 25 industry-sponsored phase 1/2 interventional studies under Dermatitis, Atopic, half reached primary completion within 22 months of starting (the median), counting those still running; a quarter within 8 and three quarters within 38. This study's planned 13 months is below that.

Counting every sponsor, half of 29 studies reached it within 22 months; a quarter within 8 and three quarters within 38.

How these figures are worked out, and which studies are left out of them.

Registered
Aug 13, 2026
First posted
Aug 24, 2026
StartEst.
Sep 2026
Primary completionEst.
Oct 2027
CompletionEst.
Jan 2028
Last update
Aug 24, 2026
What these dates mean
Start.
When the first participant enrolled; while estimated, when the study expects to open to recruitment.
Primary completion.
When the last participant was examined or treated to collect data for the study's main question, its primary outcome. A study that stopped early gives the date its data collection stopped.
Completion.
When the last participant's last visit took place, for every outcome, secondary ones and side effects included: the end of the study. Often later than primary completion, sometimes the same day.
Actual and Est.
Actual means the registry says the date has happened. Est. (estimated) is a date the sponsor plans or expects. It can still move, and the sponsor is expected to change it to actual once it has passed.
No changes since tracking began. The registry record was last updated on Aug 24, 2026, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
10

Registry details

Key details

Study ID
NCT07782476
Responsible party
Sponsor
First posted
Aug 24, 2026
Start date
Sep 2026 (estimated)
Primary completion
Oct 2027 (estimated)
Completion
Jan 2028 (estimated)
Last update
Aug 24, 2026

Study contacts

Tong Gang
Contact
tonggang@helixon.com
(86)13918569690

Oversight

FDA-regulated drug
No
FDA-regulated device
No
View the source record on ClinicalTrials.gov ↗

Not currently enrolling

This study is not yet recruiting, as verified in Aug 2026. You cannot join it, but the record below documents what was studied.

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