A Phase 1 Study of TDM-180935 Following Topical Administration in Healthy Male Subjects

Inclusion Criteria: To enter the study, a subject must meet the following criteria:

1. Subject is a male, 18-55 years old at Visit1/Screening.
2. Subject has provided written informed consent.
3. Subject is willing and able to apply the IP(s) as directed, comply with studyinstructions (including avoiding direct sunlight exposure to the areas of IPapplication), and commit to all follow-up visits for the duration of the study.
4. Subject, in the investigator's opinion, is in good general health and free of anydisease state or physical condition that might impair evaluation or exposes thesubject to an unacceptable risk by study participation.
5. Subject has normal renal and hepatic function as determined by the Visit 1/Screeninglaboratory results in the opinion of the investigator.
6. Subject is a non-smoker, defined as not having smoked or used any form of tobacco ornon-tobacco products containing nicotine in more than 6 months before Visit 2/Baseline.
7. Subject has a body mass index (BMI) of 19 to 32 kg/m2 inclusive and body weight notless than 50 kg at Visit 1/Screening.
8. Subject agrees to continue his other general skin care products and regimen for atleast 2 weeks prior to Visit 2/Baseline, and through the entire study.
9. Subjects who are sexually active with a female partner and are not surgically sterile (vasectomy performed at least 6 months prior to treatment) must agree to refrain fromsperm donation for at least 90 days after application of their last dose of IP andinform their non-pregnant female sexual partner to use a highly effective method ofbirth control as described in the informed consent form. Note: Male subject mustverbally confirm that any female partner(s) must be non-pregnant at Visit 1/Screeningand Visit 2/Baseline or at the visit when a subject identifies a new sexual partner.

Exclusion Criteria: A subject is ineligible to enter the study if he/she meets 1 or more of the followingcriteria:

1. Subject has any dermatological disorders of the skin within 20 cm of the TreatmentAreas with the possibility of interfering with the application of the IP orexamination method, such as fungal or bacterial infections, psoriasis, eczema,folliculitis, notable scarring (linear scar > 2.5 cm, etc.), or skin atrophy at Visit 2/Baseline.
2. Subject has any skin pathology or condition that, in the investigator's opinion, couldinterfere with the evaluation of the IP or requires use of interfering topical,systemic, or surgical therapy at Visit 2/Baseline.
3. Subject has any visible inflammatory skin disease, injury, or condition of their skinthat could compromise subject safety and/or interfere with the evaluation of local orsystemic assessments performed during the study.
4. Subject has a known or suspected malignancy at Visit 2/Baseline excluding basal cellskin cancer unless it is associated with the Treatment Areas per Exclusion Criterion

#1. 5. Subject has a positive blood screen for human immunodeficiency virus (HIV), hepatitisB surface antigen (HBsAg), or hepatitis C antibody. 6. Subject has any condition, which, in the investigator's opinion, would make it unsafefor the subject to participate in this study, including clinically significantabnormal laboratory, or 12-lead electrocardiogram (ECG) findings during the screeningperiod or Visit 2/Baseline prior to dosing of the IP. 7. Subject has a hospital admission or major surgery within 30 days prior to Visit 2/Baseline or planned for during the study. 8. Subject is currently enrolled in an investigational drug, biologic, or device study. 9. Subject has used an investigational drug, investigational biologic, or investigationaldevice treatment within 30 days or 5 half-lives, whichever is longer, prior to Visit 2/Baseline. 10. Subject has a history of prescription drug abuse, or illicit drug use within 6 monthsprior to Visit 1/Screening. 11. Subject has a history of alcohol abuse according to medical history within 6 monthsprior to Visit 1/Screening. 12. Subject has a positive screen for alcohol or drugs of abuse at Visit 1/Screening orVisit 2/Baseline. 13. Subject has a donation or blood collection of more than 1 unit (approximately 450 mL)of blood (or blood products) or acute loss of blood during the 90 days prior to Visit 2/Baseline. 14. Subject has used systemic prescription medications, herbal (including St John's Wort,herbal teas and garlic extracts) supplements within 14 days prior to dosing at Visit 2/Baseline. 15. Subject has used systemic over-the-counter (OTC) medications or vitamins within 7 daysprior to dosing at Visit 2/Baseline. (Note: Use of acetaminophen at < 3g/day ispermitted until 24 hours prior to dosing at Visit 2/Baseline). 16. Subject has used topical cosmetic (excluding bland moisturizers), herbal, OTC orprescription products within the designated Treatment Areas 1 day prior to dosing atVisit 2/Baseline. 17. Subject received a live or live attenuated vaccine within 4 weeks of dosing at Visit 2/Baseline. 18. Subject has signs or symptoms consistent with COVID-19 at Visit 1/Screening or Visit 2/Baseline or has been diagnosed with COVID-19 within 4 weeks of Visit 1/Screening. 19. Subject is unable to communicate or cooperate with the investigator due to languageproblems, poor mental development, or impaired cerebral function. 20. Subject has previously been treated with the IP. 21. Subject has a history of sensitivity to any of the ingredients in the IP. 22. Subject has ongoing or recent history of any other uncontrolled and/or clinicallysignificant systemic disease or condition which, in the investigator's opinion, shouldexclude participation in the study.