ClinicalTrials.gg
CompletedNCT04976140Updated Apr 3, 2024

Allogeneic Mitochondria (PN-101) Transplantation for Refractory Polymyositis or Dermatomyositis

A Phase 1/2 interventional study of PN-101 in Polymyositis and Dermatomyositis, sponsored by Paean Biotechnology Inc.. Completed at 3 sites in Korea, Republic of. Open to participants aged 19 Years and older. Per ClinicalTrials.gov, last updated 2024-04-03.

Primary conditionDermatomyositisRegistry: PolymyositisReclassifiedWhy we changed it
Registry
Polymyositis — the first condition term the registry derived for this study.
ClinicalTrials.gg
Dermatomyositis
Why
  1. The study's listed conditions name Dermatomyositis, a narrower term within Polymyositis.
Confidence
High: the new condition is named in the study's own listed conditions. Of 351 hand-checked studies reclassified this way, 68% were exactly right and 84% in the right disease family; the registry's first term was right for 5% (measured 2026-10-21). How we classify →
Wrong?
Tell us the study's main condition →

Sponsored by Paean Biotechnology Inc. · Phase 1/2, Interventional, and Treatment

Phase
Phase 1/2
Study type
Interventional
Enrollment
9
Allocation
Non-randomized
Ages
19 Years and older
Sex
All
01

Study summary

To determine the maximum tolerated dose (MTD) based on the safety and tolerability after single-dose administration of PN-101 in patients with refractory polymyositis or dermatomyositis. To explore the efficacy after single-dose administration of PN-101 in patients with refractory polymyositis or dermatomyositis.

Read the detailed description

This Phase 1/2a clinical trial involves patients diagnosed with refractory polymyositis or dermatomyositis.

The initial safety assessment is conducted, including development of DLT in subjects up to Week 2 after the investigational product administration.

[DLT assessment criteria and method]

  • Low dose or intermediate dose level

    1. No DLT developing in the initially enrolled 3 subjects (0/3): Increase the dose to the next dose group
    2. DLT developing 1 of 3 subjects (1/3): Enroll 3 additional subjects at the same dose group and then assess DLT, and ① DLT developing in 1 out of total 6 subjects (1/3+0/3; 1/6): Increase the dose to the next dose group ② DLT developing in ≥ 2 out of total 6 subjects (≥ 2/6): In case of the low dose level, the trial is discontinued without MTD determination. In case of the intermediate dose level, MTD is assessed at the low dose which is a one lower dose level
  • High dose level

    1. No DLT developing in the initially enrolled 3 subjects (0/3): Declare as the MTD
    2. DLT developing 1 of 3 subjects (1/3): Enroll 3 additional subjects at the same dose group and then assess DLT, and ① DLT developing in 1 out of total 6 subjects (1/3+0/3; 1/6): Declare as the MTD ② DLT developing in ≥ 2 out of total 6 subjects (≥ 2/6): Assess MTD at the intermediate dose which is the one lower dose level
02

Conditions studied

  • Polymyositis
  • Dermatomyositis

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Keywords

  • mitochondria
03

In context

Dermatomyositis Reclassified

184 studies on the registry are indexed under Dermatomyositis; 63 are open to participants now.

This study's enrollment of 9 is below the median of 35 across 130 interventional studies indexed under Dermatomyositis.

Browse Dermatomyositis studies →

Lead sponsor

Paean Biotechnology Inc. is the lead sponsor of 2 studies on the registry; 1 is open to participants now.

Compared within Dermatomyositis, this study's primary condition as ClinicalTrials.gg classifies it; the registry's first condition term is Polymyositis. The counts are of registry records indexed under each term, refreshed daily. How we classify →

04

Who can participate

Ages eligible
19 Years and older
Sexes eligible
All
Accepts healthy volunteers
No

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. Adult aged 19 years or more
  2. A subject who is diagnosed with polymyositis or dermatomyositis and satisfies all of the followings

    • Clinical profile: Slowly progressing clinical profile with symmetrical and apparent muscular weakness confirmed at the proximal muscle (in case of dermatomyositis, clinical findings related with characteristic skin symptoms*)

      * Gottron's papules or sign, erythema purpura, poikiloderma, calcinosis cutis, etc.

    • Serum test: Serum creatine kinase (CK) elevated (CK ≥ 1.3 × (ULN)) or serum myositis-specific antibodies (MSA) positive
    • Electromyography (EMG): Presence of a finding that indicates myopathy
  3. Baseline (prior to the product administration) manual muscle testing-8 (MMT-8) result \< 125/150 (bilaterally), and at least 2 of the following International Myositis and Clinical Studies Group (IMACS) core set results

    • Physician global disease activity [visual analogue scale (VAS)] ≥ 2 cm
    • Patient global disease activity [VAS] ≥ 2 cm
    • Health assessment questionnaire (HAQ) disability assessment ≥ 0.25
    • 1 or more items with the serum muscle enzyme > 1.3 × ULN
    • Global extramuscular disease activity [VAS] > 1 cm
  4. A subject with the drug treatment history of polymyositis or dermatomyositis for ≥ 8 weeks, who cannot receive the conventional treatment due to being or for a side effect and adverse event, and has received glucocorticosteroids at an intermediate dose (prednisone 0.5 mg/kg/day or equivalent) or higher for at least 4 weeks alone or in combination
  5. A subject who fully understands the trial and provided voluntary written consent to take part in the trial

Exclusion criteria

Exclusion Criteria:

  1. A subject with clear muscular damage, with the VAS-based myositis damage index (MDI) of ≥ 5 at screening
  2. A subject with the following medical history or surgical history

    • A surgical operation history within 12 weeks of screening
    • Malignant tumor within 5 years of screening (excluding a subject who passed 3 years or more from complete recovery of cervical cancer or skin squamous cell carcinoma)
  3. A patient with severe respiratory muscular weakening or interstitial pulmonary disease (a patient who has no moderate or severe dyspnea and has stable interstitial pneumonia may participate)
  4. A patient with the following comorbidity at screening

    • Acute viral infection or severe infection
    • Active (e.g.: HBsAg positive and HBV DNA detected) or (e.g.: Anti-HCV positive and HCV RNA [qualitatively] detective)
    • (HIV) positive
    • Findings of muscular inflammation or myopathy other than the indication (inclusion body myositis (IBM), drug-induced myopathy, amyloid myopathy, myotonic dystrophy, etc.)
    • disease such as rheumatoid arthritis (RA), systemic lupus erythematosus, psoriatic arthritis, etc. (however, in case of the overlap syndrome, a subject may participate if diseases other than inflammatory myositis are stable and myositis is thought to be due to inflammatory myositis.)
    • Findings of cardiac disorder such as moderate or severe heart failure ( Class III/IV) or corrected interval prolonged
    • Serious disease that may affect this study, at the discretion of the investigator (neurological disorder, cardiovascular disorder, uncontrolled blood pressure or diabetes, etc.)
  5. Hematological, renal and hepatic dysfunction based on the following laboratory findings at screening

    • (GFR)* \< 45 mL/min

      *eGFR (mL/min/1.73m\^2) = 175 × (serum creatinine concentration (mg/dL))\^-1.154 × (age)\^-0.203 × (0.742 in female) [modification of diet in renal disease (MDRD) formula]

    • \< 10 g/dL
    • White blood cell (WBC) count \< 3.0×10\^9/L
    • (ANC) \< 1.5×10\^9/L (1500/mm\^3)
    • count \< 100×10\^9/L
    • and ALT > 2.5 × (except for the elevation due to muscle enzyme at the discretion of the investigator)
    • Alkaline phosphatase (ALP) > 2.5 × ULN
    • Total > 1.5 × ULN (> 3 × ULN, in case of Gilbert's syndrome)
    • Thyroid stimulating hormone level exceeding the normal range (however, if the level exceeds the normal range due to the study indication at the discretion of the investigator, the subjects are allowed to enroll.)
  6. A subject with a difficulty in the efficacy assessment including the muscular strength assessment during the trial
  7. A subject who is determined to require prohibited concomitant treatment during the trial
  8. Pregnant woman and lactating mother or woman of and man who is planning to have a child or not willing to practice acceptable * during the trial

    *Hormonal contraception, intrauterine device or intrauterine system implant, double barrier method (use of both male condom and occlusive cap (contraceptive diaphragm or cervical cap) along with spermicide), surgical sterilization procedure/operation (vasectomy, tubal ligation, etc.)

  9. Participation in other clinical trial and administration of an product or application of an investigational device within 4 weeks or half-life x 5 (whichever is longer) prior to screening
  10. A subject who is otherwise ineligible for this trial, at the discretion of the investigator
Terms in these criteria, in plain language(17)

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.

ULN (upper limit of normal)

The top of the normal range for a blood test, as set by the laboratory that runs it. Each lab prints its own range next to your result.

“≤ 2.5 × ULN” means the result can be up to two and a half times that top value.

Investigational drug or device

A drug or device being studied in a clinical trial.

It may be new, or already approved and being studied for another use, dose or form. Criteria often leave out people who took part in another study of one within a recent period, commonly 30 days or five half-lives.

Relapsed and refractory

Relapsed: the illness came back after treatment had worked. Refractory: it did not respond to treatment, or stopped responding while still on it.

Hepatitis B tests

Hepatitis B is a virus that infects the liver. These are separate tests: HBsAg positive usually means a current infection (a recent vaccination can briefly cause it too); total anti-HBc (HBcAb) positive means an infection now or in the past; HBV DNA measures how much virus is in the blood.

Some studies accept a past infection if HBV DNA is undetectable, sometimes with antiviral medicine during the study. Check what this study allows.

Hepatitis C tests

Hepatitis C is a virus that infects the liver. An HCV antibody test can stay positive after an infection has cleared (and is occasionally positive without one); an HCV RNA test shows whether the virus is there now.

After treatment, hepatitis C counts as cured when HCV RNA is still undetectable 12 weeks or more after the treatment ended. Studies often accept people cured this way.

HIV

The human immunodeficiency virus, which weakens the immune system.

Many studies now accept people whose HIV is controlled on treatment, judged by the viral load and the CD4 count. Check the limits this study sets.

Autoimmune disease

A condition in which the immune system attacks the body’s own tissues, such as rheumatoid arthritis, lupus, psoriasis, type 1 diabetes or inflammatory bowel disease.

Immunotherapy studies often leave out active autoimmune disease, and some name exceptions, such as thyroid disease on replacement hormone. Check the exceptions this study lists.

NYHA class (heart failure)

The New York Heart Association’s four classes of how much heart failure limits physical activity.

I
No limits: ordinary activity causes no undue tiredness or breathlessness.
II
Slight limits: comfortable at rest, ordinary activity causes symptoms.
III
Marked limits: comfortable at rest, less than ordinary activity causes symptoms.
IV
Symptoms even at rest; any activity makes them worse.

Studies set their own limit — many outside heart failure leave out class III–IV, while heart failure studies may ask for a particular class. Check the class this study names.

QT and QTc

On an ECG, the QT interval is the time the heart’s lower chambers take to activate electrically and recover in each beat. QTc is that time adjusted for heart rate (QTcF by Fridericia’s formula, QTcB by Bazett’s). Some medicines lengthen it, and a long QTc can raise the risk of a dangerous heart rhythm.

The study may name a correction formula and a limit in milliseconds, often around 450–480.

GFR and eGFR (kidney filtering)

GFR (glomerular filtration rate) is how much blood the kidneys filter each minute. It is usually estimated from a blood test — eGFR, by formulas such as CKD-EPI or MDRD — and some studies ask for it to be measured directly instead. Usually given in mL/min/1.73 m².

Check the method, the units and the minimum the study states. A value of 90 or above is in the normal-or-high range, but kidney damage can show in other tests too.

Hemoglobin (Hb)

The protein in red blood cells that carries oxygen. A low level is anaemia, which can cause tiredness and breathlessness. Measured in g/dL or g/L (9 g/dL is 90 g/L).

Absolute neutrophil count (ANC)

The number of neutrophils, white blood cells that help fight infection, in a given amount of blood. Too few raises the risk of infection.

It is a count, not a percentage of the white cells. Limits are written in units that mean the same: ≥ 1.5 × 10⁹/L is ≥ 1,500 per mm³ (µL). Each lab has its own reference range.

Platelets

Blood cells that help blood clot. Too few raises the risk of bleeding and bruising. A usual adult range is about 150–400 × 10⁹/L (150,000–400,000 per µL); each lab has its own reference range.

ALT and AST (liver enzymes)

Two enzymes measured in a routine blood test of the liver. Higher levels can mean the liver is under strain or damaged. SGPT and SGOT are older names for ALT and AST.

Criteria usually give a limit as a multiple of the upper limit of normal (ULN), often higher when cancer has spread to the liver.

Bilirubin

A yellow substance made when red blood cells are broken down, which the liver clears. A high level can mean a problem with the liver or the bile ducts.

Criteria often allow more for people with Gilbert’s syndrome, a harmless inherited condition that raises bilirubin.

Childbearing potential

Able to become pregnant: from the first period until menopause, unless permanently unable to through surgery (removal of the womb, or of both ovaries or both fallopian tubes).

Criteria for people of childbearing potential usually ask for a negative pregnancy test and for contraception during the study and for a time after it.

Contraception

Ways of preventing pregnancy. “Highly effective” methods fail less than 1% of the time a year when used correctly — for example an IUD or an implant.

Criteria usually say which methods count and how long to keep using them after the last dose, sometimes for male participants too. Some studies accept a partner’s vasectomy if it was confirmed successful and that person is the participant’s only sexual partner.

05

Study design

Phase
Phase 1 / Phase 2
Primary purpose
Treatment
Allocation
Non-randomized
Intervention model
Sequential assignment
Masking
None (open label)
Enrollment
9 participants (actual)

Study arms

  • Experimental
    Low dose group

    The investigational product is intravenously administered according to the planned dose.

    Biological: PN-101

  • Experimental
    Intermediate dose group

    The investigational product is intravenously administered according to the planned dose.

    Biological: PN-101

  • Experimental
    High dose group

    The investigational product is intravenously administered according to the planned dose.

    Biological: PN-101

Interventions

  • BiologicalPN-101

    PN-101: Mitochondria isolated from Allogeneic Umbilical Cord-derived Mesenchymal Stem Cells. 3 or 6 subjects are enrolled in each dose group in line with the traditional 3+3 rule-based method, and the investigator intravenously administers a single-dose of the investigational product according to the planned dose.

06

What researchers measure

Primary outcomes

  1. Dose Limiting Toxicity(DLT)

    Assessment of DLT for each dose group up to 2 weeks after the IP administration. Severity will be graded according to CTCAE, Version 5.0.

    Time frame: 2 weeks after IP administration

  2. International Myositis And Clinical Studies group-Total Improvement Score(IMACS-TIS)

    Assessment of IMACS-TIS at Week 12 after the IP administration. Total Improvement Score (TIS) based on absolute percentage change is assessed scale 0 to 100. Higher score indicates greater improvement.

    Time frame: 12 weeks after the IP administration

Secondary outcomes

  1. International Myositis And Clinical Studies group-Total Improvement Score(IMACS-TIS)

    Assessment of IMACS-TIS at week 4 after the IP administration. Total Improvement Score (TIS) based on absolute percentage change is assessed scale 0 to 100. Higher score indicates greater improvement.

    Time frame: 4 weeks after the IP administration

  2. International Myositis And Clinical Studies group-Total Improvement Score(IMACS-TIS)

    Assessment of IMACS-TIS at week 8 after the IP administration. Total Improvement Score (TIS) based on absolute percentage change is assessed scale 0 to 100. Higher score indicates greater improvement.

    Time frame: 8 weeks after the IP administration

  3. Response rate of IMACS-TIS

    Proportion of subjects with the IMACS-TIS ≥ 20 at week 12 after the IP administration.

    Time frame: 12 weeks after the IP administration

  4. Changes of Core Set Activity Measures(CSAM)

    Changes in CSAM for the IMACS assessed at week 4, week 8 and week 12 after the IP administration from the baseline (Visit 2).

    Time frame: Visit 2(Day 1), Visit 5(4 weeks), Visit 6(8 weeks), Visit 7(12 weeks)

  5. Changes of Cutaneous Dermatomyositis Disease Area and Severity Index (CDASI)

    Changes in CDASI assessed at week 4, week 8 and week 12 after the IP administration from the baseline (Visit 2) for dermatomyositis only.

    Time frame: Visit 2(Day 1), Visit 5(4 weeks), Visit 6(8 weeks), Visit 7(12 weeks)

  6. Changes of Peak Pruritus Numeral Rating Scale(PPNRS)

    Changes in PPNRS assessed at week 4, week 8 and week 12 after the IP administration from the baseline (Visit 2) for dermatomyositis only. The intensity of pruritis is assessed on a patient reported scale 0 to 10.

    Time frame: Visit 2(Day 1), Visit 5(4 weeks), Visit 6(8 weeks), Visit 7(12 weeks)

07

Study locations

3 sites
  • Seoul National University Hospital
    Seoul, 03080, Korea, Republic of
  • Soonchunhyang University Seoul Hospital
    Seoul, 04401, Korea, Republic of
  • Hanyang University Seoul Hospital
    Seoul, 04763, Korea, Republic of
08

References and documents

Individual participant data

Plan to share: No

No publications or documents are linked to this record.

09

Updates

Tracking since Sep 25, 2026
No changes since tracking began. The registry record was last updated on Apr 3, 2024, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
10

Registry details

Key details

Study ID
NCT04976140
Lead sponsor
Paean Biotechnology Inc.
Responsible party
Sponsor
First posted
Jul 26, 2021
Start date
Dec 15, 2021
Primary completion
Oct 6, 2023
Completion
Oct 6, 2023
Last update
Apr 3, 2024

Study contacts

Eunyoung Lee, MD
principal investigator · Seoul National University College of Medicine
Daehyun Yoo, MD
principal investigator · Hanyang University College of Medicine
Hyunsook Kim, MD
principal investigator · Soonchunhyang University College of Medicine

Oversight

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

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This study is completed, as verified in Apr 2024. You cannot join it, but the record below documents what was studied.

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