Intralesional Ronkyla Plus Injection for the Treatment of Superficial Lipoma

A Safety, Efficacy and Pharmacokinetic Evaluation Study of Intralesional Ronkyla Plus Injection for the Treatment of Superficial Lipoma

This study aims to evaluate the safety, efficacy, and pharmacokinetics of Ronkyla Plus, a combinational drug that forms a hydrogel at the injection site, promising a better experience of lipolysis injection for the treatment of superficial lipoma. The study consists of a Part I dose-escalation study to investigate the drug's maximum tolerated dose (MTD) for this indication and a Part II study for evaluating its relative bioavailability in comparison to an FDA-approved lipolysis injection, Kybella.

Study Overview

• Status: Recruiting
• Conditions: Lipoma; Submental Fullness
• Intervention / Treatment: Drug: Ronkyla Plus; Drug: Placebo; Drug: Kybella

Detailed Description

Part I is a randomized, double-blind, placebo-controlled, and sequential dose-escalation study. Eligible subjects will receive intralesional injections of Ronkyla Plus or placebo at a volume dependent on the size of their superficial lipoma, up to a maximum of 10 mL per treatment, at 28-day intervals for up to a maximum of 6 treatments. In the first treatment cycle, subjects will stay in hospital for 3 hours after treatment for evaluation of acute safety profile. Subjects will return to the hospital on Day 8 and Day 29 of each treatment cycle for safety profile evaluation.

Part II is an open-label, single-dose, 2-treatment, parallel study to evaluate the relative bioavailability of Ronkyla Plus injection in comparison with that of Kybella injection. Eligible, non-smoking males and females aged 18 to 65 with treatable superficial lipoma or submental fullness will be included in the study. Twenty (20) subjects for each target symptom, in a total of 40 subjects, are planned to be enrolled in the study to achieve at least 16 evaluable subjects in each treatment group. After screening, subjects will be assigned to Ronkyla Plus or Kybella treatment based on their symptoms and undergo a 16-day PK assessment.

For Ronkyla Plus injection, subject will receive a single intralesional treatment at the maximum tolerated dose (MTD) as determined in Part I. For Kybella injection, subject will receive the maximum dose approved for a single treatment (100 mg) in the submental area.

In the PK assessment period, subjects will visit the hospital in the mornings of Day 3 (48.0 h), Day 5 (96.0 h), Day 8 (168.0 h), Day 11 (240.0 h), and Day 15 (336.0 h), and two consecutive 24-hr PK blood samplings from Day -2 evening to Day 2 morning (pre-dose, 0.25, 0.5, 1.0, 1.5, 2.0, 3.0, 4.0, 6.0, 8.0, 12.0, 16.0, 24.0 h post-dose on Day 1~Day 2; same blood sampling time on Day -1~Day 1 without dosing). Two weeks after the end of the 16-day PK assessment period, subjects of Ronkyla Plus cohort will be eligible for up to 5 additional treatments of Ronkyla Plus for complete clearance of their target superficial lipomas, whereas subjects of Kybella cohort will be eligible for up to 5 additional treatments of Ronkyla (10.56 mg/mL SDC injection approved in Taiwan for submental fullness treatment, pharmaceutical equivalent of Kybella) for improvement of their submental fullness.

• Study Type: Interventional
• Enrollment (Estimated): 56
• Phase: Phase 1

Contacts and Locations

• Study Contact: Name: Helen Wang, MS; Phone Number: 217 (+886) 2-2351-1190; Email: Helen.Wang@ttopcro.com.tw

Study Locations

• Taiwan
  • Da'an District
    • Taipei, Da'an District, Taiwan, 106436
      • Recruiting
      • Cathay General Hospital
      • Contact: Yu-Hsiu Yen, MD; Phone Number: 5591-93 +886-2-27082121; Email: yenyuhsiu@gmail.com
      • Sub-Investigator: Chi-Ming Pu, MD
  • Sijhih District
    • New Taipei City, Sijhih District, Taiwan, 22174
      • Recruiting
      • Cathay General Hospital Sijhih Branch
      • Contact: Yu-Hsiu Yen, MD; Phone Number: 5591-93 +886-2-27082121; Email: yenyuhsiu@gmail.com

Participation Criteria

Eligibility Criteria

• Ages Eligible for Study: Adult; Older Adult
• Accepts Healthy Volunteers: Yes

Description

Inclusion Criteria:

1. Healthy male or female adults aged 18 to 65 years, inclusive.

2. One or more superficial lipomas, based on clinical diagnosis, which are accessible for treatment and assessment, are quantifiable along at least 2 perpendicular diameters, and have the following characteristics:

   • History of slow growth followed by dormancy, and stable for at least 6 months.
   • Greatest length by greatest perpendicular width between 1 and 10 square centimeters, inclusive.
   • Discrete, oval to rounded in shape, not hard or attached to underlying tissue.
   • Located on the trunk, arms, legs, or neck
   • Needle biopsy core tissue sample histological analysis results consistent with a diagnosis of lipoma.

   OR, sufficient submental fat for injection of 100 mg Kybella in the judgment of the investigator (Part II Kybella cohort only)

3. Body mass index (BMI): BMI between 22 to 30 (normal, overweight and slight obese).
4. History of stable body weight, in the judgment of the investigator, for at least 6 months before enrollment.
5. The health status is assessed by the investigator as "normal healthy" based on required screening assessments.

6. Females of childbearing potential must have a negative human chorionic gonadotropin (hCG) test result within 28 days before enrollment and agree to use a highly effective method of contraception from enrollment up to the study end, such as:

   • Intrauterine device
   • Combined (estrogen- and progestogen-containing) hormonal contraception associated with the inhibition of ovulation (oral, intravaginal, or transdermal)
   • Progestogen-only hormonal contraception associated with the inhibition of ovulation (oral, injectable, intrauterine, or implantable)
   • Tubal ligation
   • Vasectomized male partner
   • Sexual abstinence

   Female subject being postmenopausal for at least 1 year or surgically sterile is considered to be of no childbearing potential.

7. Able and willing to comply with scheduled clinic visits and clinical trial procedures.
8. Capable of understanding and giving signed informed consent form after full discussion of the research nature of the treatment and its risk and benefits with the investigator/ designee of the sponsor.

Exclusion Criteria:

1. History of surgical treatment for the target superficial lipoma or submental area (Part II Kybella cohort only).
2. Current infection or wound near the target superficial lipoma or the submental area (Part II Kybella cohort only).
3. History of diabetes.
4. Allergic to excipients of Ronkyla Plus or Kybella (Part II Kybella cohort only)

5. A result on coagulation tests (prothrombin time, activated partial thromboplastin time) obtained within 28 days before enrollment that indicates the presence of any clinically significant bleeding disorder (subjects being treated with antiplatelet therapy or anticoagulants could be enrolled after 7-day washout period):

   • Prothrombin time > 20 seconds.
   • Activated partial thromboplastin time > 60 seconds.
   • INR > 3.
6. Any ongoing medical condition with significant risk of bleeding
7. Evidence of any serious active infections, COVID 19, severe uncontrolled cardiac, renal, hepatic, pulmonary or other systemic disease, significant medical or psychiatric condition, known seropositivity to HIV/HBV/HCV, or clinically significant laboratory findings that would, in the investigator's judgment, make the subject inappropriate for the study.
8. Administration of an investigational drug within 30 days prior to enrollment.
9. Administration of a COVID-19 vaccine within 30 days prior to enrollment.

10. Abnormal hepatic and renal functions; hematologic changes at screening:

    • Aspartate aminotransferase (AST) or alanine aminotransferase (ALT) > 2.5 X upper limit of normal (ULN).
    • Total bilirubin > 1.5 X ULN.
    • Serum creatinine > 1.5 X ULN.
    • Hemoglobin < lower limit of normal (LLN).
    • Platelets ≤ 100.000/mm³.
11. Current malignancy of any organ system or a history within 5 years.
12. Subjects who, in the opinion of the investigator, are not likely to complete the trial for whatever reason.

Part I & Part II Ronkyla Plus cohort specific exclusion criteria:

1. History of any medical condition contraindicated or not recommended for aspirin use including active peptic ulcer disease, asthma, gout, uncontrolled hypertension.
2. Taking any medication contraindicated or not recommended for concomitant use with aspirin within 7 days prior to enrollment.
3. Allergic to Aspirin, salicylates, or non-steroidal anti-inflammatory drugs (NSAIDs).
4. The target lipoma warrants surgical removal per the investigator's judgement (e.g., for confirming its pathology).

Part I dose level 2 and 4 cohorts & Part II specific exclusion criteria:

1. History of alcohol or drug abuse within the past year prior to Day 1.
2. History of smoking or use of nicotine-containing product within 6 months prior to Day 1.
3. Donation or significant loss of blood (480 mL or more) within 60 days prior to Day 1.

Study Plan

How is the study designed?

Design Details

• Primary Purpose: Treatment
• Allocation: Randomized
• Interventional Model: Sequential Assignment
• Masking: Quadruple

Number of Arms

6

Arms and Interventions

Participant Group / Arm	Intervention / Treatment
Experimental: Part I: Dose Level 1; 0.25 mL/cm2 of Ronkyla Plus (n=3), or placebo in equivalent injection volume/lipoma size (n=1) every 4 weeks for up to 6 treatments.	Drug: Ronkyla Plus; Ronkyla Plus is a new formulation of sodium deoxycholate lipolysis injection. It forms a hydrogel at the injection site.; Drug: Placebo; Normal saline for injection.; Other Names: Normal saline
Experimental: Part I: Dose Level 2; 0.5 mL/cm2 of Ronkyla Plus (n=3), or placebo in equivalent injection volume/lipoma size (n=1) every 4 weeks for up to 6 treatments.	Drug: Ronkyla Plus; Ronkyla Plus is a new formulation of sodium deoxycholate lipolysis injection. It forms a hydrogel at the injection site.; Drug: Placebo; Normal saline for injection.; Other Names: Normal saline
Experimental: Part I: Dose Level 3; 0.75 mL/cm2 of Ronkyla Plus (n=3), or placebo in equivalent injection volume/lipoma size (n=1) every 4 weeks for up to 6 treatments.	Drug: Ronkyla Plus; Ronkyla Plus is a new formulation of sodium deoxycholate lipolysis injection. It forms a hydrogel at the injection site.; Drug: Placebo; Normal saline for injection.; Other Names: Normal saline
Experimental: Part I: Dose Level 4; 1.0 mL/cm2 of Ronkyla Plus (n=3), or placebo in equivalent injection volume/lipoma size (n=1) every 4 weeks for up to 6 treatments.	Drug: Ronkyla Plus; Ronkyla Plus is a new formulation of sodium deoxycholate lipolysis injection. It forms a hydrogel at the injection site.; Drug: Placebo; Normal saline for injection.; Other Names: Normal saline
Experimental: Part II: Ronkyla Plus treatment; Eligible subjects with a treatable superficial lipoma will receive a single treatment of Ronkyla Plus at the maximum tolerated dose determined in Part I and undergo a 16-day PK assessment.	Drug: Ronkyla Plus; Ronkyla Plus is a new formulation of sodium deoxycholate lipolysis injection. It forms a hydrogel at the injection site.
Active Comparator: Part II: Kybella treatment; Eligible subjects with submental fullness will receive a single treatment of Kybella at the maximum approved dose for a single session (100 mg) and undergo a 16-day PK assessment.	Drug: Kybella; 10 mg/mL deoxycholic acid injection; Other Names: ATX-101; deoxycholic acid

What is the study measuring?

Primary Outcome Measures

Outcome Measure	Measure Description	Time Frame
Part I: Incidence of all adverse events	Also a Part II Secondary Outcome Measure	7 months (Part I); 1 month (Part II)
Part I: Incidence of all serious adverse events	Also a Part II Secondary Outcome Measure	7 months (Part I); 1 month (Part II)
Part I: Incidence of Common Terminology Criteria for Adverse Events (CTCAE) grade ≥2 bone marrow toxicities	Also a Part II Secondary Outcome Measure. CTCAE version 5.0 (Grade 1: Mild, Grade 2: Moderate, Grade 3: Severe, Grade 4: Life-threatening, Grade 5: Death)	7 months (Part I); 1 month (Part II)
Part I: Incidence of Common Terminology Criteria for Adverse Events (CTCAE) grade ≥2 cardiac toxicities	Also a Part II Secondary Outcome Measure. CTCAE version 5.0 (Grade 1: Mild, Grade 2: Moderate, Grade 3: Severe, Grade 4: Life-threatening, Grade 5: Death)	7 months (Part I); 1 month (Part II)
Part I: Change from baseline in vital signs	Also a Part II Secondary Outcome Measure. Measurement of blood pressure (including systolic blood pressure and diastolic blood pressure, unit: mmHg; pulse rate, unit: beats/mins; respiratory rate, unit: times/min; body temperature, unit: degree Celsius)	7 months (Part I); 1 month (Part II)
Part I: Change from baseline in physical and weight measurement	Also a Part II Secondary Outcome Measure. Physical examination includes: general appearance and weight (kg), HEENT (head, eyes, ears, nose, and throat), mouth, skin, neck (including thyroid), lymph nodes, spine, cardiovascular system, gastrointestinal system, nervous system, musculoskeletal system, mental status.	7 months (Part I); 1 month (Part II)
Part I: Change from baseline in Comprehensive Metabolic Panel blood test	Also a Part II Secondary Outcome Measure. Blood test for: albumin, blood urea nitrogen, calcium, carbon dioxide, chloride, creatinine, glucose, potassium, sodium, total bilirubin and protein, alanine aminotransferase, alkaline phosphatase, aspartate aminotransferase	7 months (Part I); 1 month (Part II)
Part I: Change from baseline in Complete blood count test	Also a Part II Secondary Outcome Measure. Blood test includes: hemoglobin, hematocrit, red blood cell, white blood cell (neutrophils, band %, segment %, eosinophils, basophils, lymphocytes, and monocytes), platelet count, mean corpuscular volume, mean corpuscular hemoglobin, mean corpuscular hemoglobin	7 months (Part I); 1 month (Part II)
Part I: Change from baseline in lipid profile.	Also a Part II Secondary Outcome Measure. Blood test includes: total cholesterol, low-density lipoprotein cholesterol, high-density lipoprotein cholesterol, triglyceride.	7 months (Part I); 1 month (Part II)
Part I: Change from baseline in thyroid test.	Also a Part II Secondary Outcome Measure. Blood test includes: triidothyronine, thyroxine, and thyroid-stimulating hormone.	7 months (Part I); 1 month (Part II)
Part I: Change from baseline in urinalysis	Also a Part II Secondary Outcome Measure. Measurement includes: pH, protein, occult blood, leukocyte, glucose, ketones, bilirubin, urobilinogen, nitrite, clinical microscopy.	7 months (Part I); 1 month (Part II)
Part I: Change from baseline in inflammation evaluation.	Also a Part II Secondary Outcome Measure. Test includes: c-reactive protein, erythrocyte sedimentation rate	7 months (Part I); 1 month (Part II)
Part I: Change from baseline in coagulation function.	Also a Part II Secondary Outcome Measure. Blood test includes: prothrombin time, activated partial thromboplastin time	7 months (Part I); 1 month (Part II)
Part II: Baseline-adjusted area under the plasma concentration-time curve over a 24-hour period (AUC0-24) of deoxycholic acid	PK values on Day -1~Day 1 (pre-dosing) will be subtracted from PK values on Day 1 ~Day 15 (post-dosing)	16 days
Part II: Baseline-adjusted area under the curve from zero to time infinity (AUC0-inf) of deoxycholic acid	PK values on Day -1~Day 1 (pre-dosing) will be subtracted from PK values on Day 1 ~Day 15 (post-dosing)	16 days
Part II: Baseline-adjusted peak plasma concentration (Cmax) of deoxycholic acid	PK values on Day -1~Day 1 (pre-dosing) will be subtracted from PK values on Day 1 ~Day 15 (post-dosing)	16 days
Part II: Baseline-adjusted time to maximum concentration (Tmax) of deoxycholic acid	PK values on Day -1~Day 1 (pre-dosing) will be subtracted from PK values on Day 1 ~Day 15 (post-dosing)	16 days
Part II: Baseline-adjusted elimination half-life (T1/2) of deoxycholic acid	PK values on Day -1~Day 1 (pre-dosing) will be subtracted from PK values on Day 1 ~Day 15 (post-dosing)	16 days
Part II: Baseline-adjusted, dose-normalized area under the plasma concentration-time curve over a 24-hour period (AUC0-24)	Baseline-adjusted PK values will be divided by the injected dose of deoxycholic acid	16 days
Part II: Baseline-adjusted, dose-normalized area under the curve from zero to time infinity (AUC0-inf) of deoxycholic acid	Baseline-adjusted PK values will be divided by the injected dose of deoxycholic acid	16 days
Part II: Baseline-adjusted, dose-normalized peak plasma concentration (Cmax) of deoxycholic acid	Baseline-adjusted PK values will be divided by injected dose of deoxycholic acid	16 days
Part II: Baseline-adjusted, dose-normalized time to maximum concentration (Tmax) of deoxycholic acid	Baseline-adjusted PK values will be divided by the injected dose of deoxycholic acid.	16 days
Part II: Baseline-adjusted, dose-normalized elimination half-life (T1/2) of deoxycholic acid	Baseline-adjusted PK values will be divided by the injected dose of deoxycholic acid	16 days

Secondary Outcome Measures

Outcome Measure	Measure Description	Time Frame
Percentage of subjects with "complete" or "almost complete" clearance of the target superficial lipoma at the end of Cycle 2 (Part I only)	At screening, 1 target superficial lipoma will be selected for treatment. Lipoma will be measured in ≥ 2 dimensions (longest length, perpendicular width, and height if possible) using both digital calipers and ultrasound imaging. Almost complete clearance is defined as ≥ 90% reduction in surface area of the target superficial lipoma	2 months
Percentage of subjects with "complete" or "almost complete" clearance of the target superficial lipoma at the end of each treatment cycle and end of study	Days 29, 57, 85, 113, 141, 169, 197 for Part I; Day 29 for Part II Ronkyla Plus cohort	7 months (Part I); 1 month (Part II)
Percentage of subjects with "complete" clearance of the target superficial lipoma at the end of each treatment cycle and end of study	Days 29, 57, 85, 113, 141, 169, 197 for Part I; Day 29 for Part II Ronkyla Plus cohort	7 months (Part I); 1 month (Part II)
Percentage of subjects with "almost complete" clearance of the target superficial lipoma at the end of each treatment cycle and end of study	Days 29, 57, 85, 113, 141, 169, 197 for Part I; Day 29 for Part II Ronkyla Plus cohort	7 months (Part I); 1 month (Part II)
Percentage reduction in size of the target superficial lipoma at the end of each treatment cycle and end of study	Days 29, 57, 85, 113, 141, 169, 197 for Part I; Day 29 for Part II Ronkyla Plus cohort	7 months (Part I); 1 month (Part II)
Percentage of subjects having their target superficial lipoma rated by the investigator as 0 or 1 point on the investigator's lipoma morphology assessment scale at the end of each treatment cycle and end of study	Days 29, 57, 85, 113, 141, 169, 197 for Part I; Day 29 for Part II Ronkyla Plus cohort. At screening, the beginning/end of each treatment cycle, and the end of study, the investigator will use a 4-point scale of 0-3 to rate the morphology of subjects' target lipomas where 0= Not palpable, 1=Not visible, barely palpable, 2=Visible upon palpation, and 3=Clearly visible, easily palpable. A score of 0 to 1 indicates favorable morphological changes of the target lipoma following treatment(s).	7 months (Part I); 1 month (Part II)
Percentage of subjects having their target superficial lipoma rated by the investigator with ≥2 points improvement on the investigator's lipoma morphology assessment scale at the end of each treatment cycle and end of study	Days 29, 57, 85, 113, 141, 169, 197 for Part I; Day 29 for Part II Ronkyla Plus cohort. Investigator's lipoma morphology assessment scale where 0 = not palpable; 1 = not visible, barely palpable; 2 = visible upon palpation; 3 = clearly visible, easily palpable. The percentage of subjects having their target superficial lipomas assessed by the investigator on the scale as follows: 0 or 1 point; with ≥ 2 points improvement from baseline; with ≥ 1 point improvement from baseline.	7 months (Part I); 1 month (Part II)
Percentage of subjects having their target superficial lipoma rated by the investigator with ≥1 point improvement on the investigator's lipoma morphology assessment scale at the end of each treatment cycle and end of study	Days 29, 57, 85, 113, 141, 169, 197 for Part I; Day 29 for Part II Ronkyla Plus cohort. Investigator's lipoma morphology assessment scale where 0 = not palpable; 1 = not visible, barely palpable; 2 = visible upon palpation; 3 = clearly visible, easily palpable. The percentage of subjects having their target superficial lipomas assessed by the investigator on the scale as follows: 0 or 1 point; with ≥ 2 points improvement from baseline; with ≥ 1 point improvement from baseline.	7 months (Part I); 1 month (Part II)
Percentage of subjects being satisfied with treatment outcome at the end of each treatment cycle and end of study	Days 29, 57, 85, 113, 141, 169, 197 for Part I; Day 29 for Part II Ronkyla Plus cohort. Satisfaction assessment will be performed independently by subjects using a 5-point scale where 0 = worsen, 1 = no response, 2 = moderate response, 3 = good response, and 4 = excellent response. A score of 3 or 4 qualifies for a satisfactory treatment outcome.	7 months (Part I); 1 month (Part II)
Injection site pain rated by subjects on a 0-10 numeric rating scale (NRS) at 1 hour and 1 week after each treatment	Days 1, 8, 29, 36, 57, 64, 85, 92, 113, 120, 141, 148 for Part I; Days 1, 8 for Part II Ronkyla Plus cohort. At approximately 1 hour after each treatment, and at the 1-week follow-up visit for each treatment, subjects will be asked to rate their injection site pain using a 0-10 numeric rating scale (NRS) where 0 = no pain and 10 = most severe pain possible.	25 weeks (Part I); 1 week (Part II)

Collaborators and Investigators

• Sponsor: Glonova Pharma Co., Ltd
• Collaborators: T-TOP Clinical Research Co., Ltd.
• Investigators: Principal Investigator: Yu-Hsiu Yen, MD, Cathay General Hospital

Study record dates

Study Major Dates

• Study Start (Actual): November 14, 2025
• Primary Completion (Estimated): November 14, 2026
• Study Completion (Estimated): January 14, 2027

Study Registration Dates

• First Submitted: November 13, 2025
• First Submitted That Met QC Criteria: November 16, 2025
• First Posted (Estimated): November 19, 2025

Study Record Updates

• Last Update Posted (Estimated): December 4, 2025
• Last Update Submitted That Met QC Criteria: November 26, 2025
• Last Verified: November 1, 2025

More Information

Terms related to this study

• Keywords: ATX-101; Ronkyla Plus
• Additional Relevant MeSH Terms: Neoplasms; Neoplasms by Histologic Type; Neoplasms, Connective and Soft Tissue; Neoplasms, Adipose Tissue; Lipoma; Pharmaceutical Preparations; Polycyclic Compounds; Steroids; Fused-Ring Compounds; Crystalloid Solutions; Isotonic Solutions; Solutions; Cholic Acids; Bile Acids and Salts; Cholanes; Deoxycholic Acid; Saline Solution
• Other Study ID Numbers: SDC003

Plan for Individual participant data (IPD)

• Plan to Share Individual Participant Data (IPD)?: NO

Drug and device information, study documents

• Studies a U.S. FDA-regulated drug product: Yes
• Studies a U.S. FDA-regulated device product: No