> Trialight public data. Index of pages: https://trialight.com/llms.txt > Web page: https://trialight.com/data/trial/first-in-human-study-of-db-1305-bnt325-for-advanced-88306ae5-d5da-4fa2-86c1-a9abd49169eb > Record changed: 2026-10-29 # First-in-human Study of DB-1305/BNT325 for Advanced/Metastatic Solid Tumors NCT05438329 Source: [clinicaltrials.gov](https://clinicaltrials.gov/study/NCT05438329) Phase Phase 1/Phase 2 Source: [clinicaltrials.gov](https://clinicaltrials.gov/study/NCT05438329) Recruitment status Active, not recruiting Source: [clinicaltrials.gov](https://clinicaltrials.gov/study/NCT05438329) Participants 1,123 Source: [clinicaltrials.gov](https://clinicaltrials.gov/study/NCT05438329) Lead sponsor DualityBio Inc. Source: [clinicaltrials.gov](https://clinicaltrials.gov/study/NCT05438329) Start date 2022-07-19 Source: [clinicaltrials.gov](https://clinicaltrials.gov/study/NCT05438329) Number of sites 93 Source: [clinicaltrials.gov](https://clinicaltrials.gov/study/NCT05438329) ## Title and summary **Summary** This is a dose-escalation and dose-expansion Phase 1/2a trial to evaluate the safety and tolerability of DB-1305/BNT325 in subjects with advanced solid tumors. Source: [clinicaltrials.gov](https://clinicaltrials.gov/study/NCT05438329) **Short title** First-in-human Study of DB-1305/BNT325 for Advanced/Metastatic Solid Tumors Source: [clinicaltrials.gov](https://clinicaltrials.gov/study/NCT05438329) **Official title** A Phase 1/2a, Multicenter, Open-Label, First in Human Study to Assess the Safety, Tolerability, Pharmacokinetics, and Preliminary Antitumor Activity of DB-1305 in Subjects With Advanced/Metastatic Solid Tumors Source: [clinicaltrials.gov](https://clinicaltrials.gov/study/NCT05438329) ## Status and phase **Control arm** Open label Source: [clinicaltrials.gov](https://clinicaltrials.gov/study/NCT05438329) **Registry reports results** No Source: [clinicaltrials.gov](https://clinicaltrials.gov/study/NCT05438329) **Listing at source** Listed Source: [clinicaltrials.gov](https://clinicaltrials.gov/study/NCT05438329) **Recruitment status** Active, not recruiting Source: [clinicaltrials.gov](https://clinicaltrials.gov/study/NCT05438329) **Phase** Phase 1/Phase 2 Source: [clinicaltrials.gov](https://clinicaltrials.gov/study/NCT05438329) **Study type** Interventional Source: [clinicaltrials.gov](https://clinicaltrials.gov/study/NCT05438329) ## Dates **Completion date** 2027-09-10 Source: [clinicaltrials.gov](https://clinicaltrials.gov/study/NCT05438329) **First posted** 2022-06-29 Source: [clinicaltrials.gov](https://clinicaltrials.gov/study/NCT05438329) **Registry last updated** 2026-05-12 Source: [clinicaltrials.gov](https://clinicaltrials.gov/study/NCT05438329) **Primary completion date** 2027-08-13 Source: [clinicaltrials.gov](https://clinicaltrials.gov/study/NCT05438329) **Start date** 2022-07-19 Source: [clinicaltrials.gov](https://clinicaltrials.gov/study/NCT05438329) ## Size and sites **Participants** 1,123 Source: [clinicaltrials.gov](https://clinicaltrials.gov/study/NCT05438329) **Participant count basis** Estimated Source: [clinicaltrials.gov](https://clinicaltrials.gov/study/NCT05438329) **Planned participants** 1,123 Source: [clinicaltrials.gov](https://clinicaltrials.gov/study/NCT05438329) **Protocol amendments** 9 Source: [clinicaltrials.gov](https://clinicaltrials.gov/study/NCT05438329) **Number of sites** 93 Source: [clinicaltrials.gov](https://clinicaltrials.gov/study/NCT05438329) ## Sponsor and oversight **Registry sponsor category** Industry Source: [clinicaltrials.gov](https://clinicaltrials.gov/study/NCT05438329) **Lead sponsor** DualityBio Inc. Source: [clinicaltrials.gov](https://clinicaltrials.gov/study/NCT05438329) **Source registry** ClinicalTrials.gov Source: [clinicaltrials.gov](https://clinicaltrials.gov/study/NCT05438329) ## Identifiers **Registry ID** NCT05438329 Source: [clinicaltrials.gov](https://clinicaltrials.gov/study/NCT05438329) **ClinicalTrials.gov ID** NCT05438329 Source: [clinicaltrials.gov](https://clinicaltrials.gov/study/NCT05438329) **Registry record** Open registry record Source: [clinicaltrials.gov](https://clinicaltrials.gov/study/NCT05438329) ## Study design **Allocation** Not applicable **Model** Single group **Purpose** Treatment **Masking** No masking Sources for study design Source: [clinicaltrials.gov](https://clinicaltrials.gov/study/NCT05438329) ## Outcomes ### Primary outcomes 1. Phase 1: Percentage of Participants with Dose-Limiting Toxicities (DLTs) as assessed by National Cancer Institute - Common Terminology Criteria for Adverse Events (NCI-CTCAE) v5.0. Timeframe: up to 28 days after Cycle 1 Day 1 Percentage of participants in Part 1 with DLTs 2. Phase 1: Percentage of Participants with Treatment Emergent Adverse Events (TEAEs) as assessed by CTCAE v5.0. Timeframe: Up to 30 days after last study treatment administration or before starting new anticancer treatment, whichever comes first. Percentage of participants with TEAEs in Part 1 graded according to NCI CTCAE v5.0 3. Phase 1: Percentage of Participants with Serious Adverse Events (SAEs) as assessed by CTCAE v5.0. Timeframe: Up 30 days after last study treatment administration or before starting new anticancer treatment, whichever comes first. Percentage of Participants with SAEs in Part 1 graded according to NCI CTCAE v5.0 4. Maximum Tolerated Dose (MTD) of DB-1305/BNT325 Timeframe: At the end of Cycle 1 (each cycle is up to 21 days) MTD on the data collected during Part 1 5. Phase 1: RP2D of DB-1305/BNT325 Timeframe: From first study treatment administration until the initiation of Phase 2a, approximately up to 12 months. RP2D of DB-1305/BNT325 based on the data collected during Part 1 6. Phase 2a: Percentage of Participants with TEAEs as assessed by CTCAE v5.0. Timeframe: Up to 30 days after last study treatment administration or before starting new anticancer treatment, whichever comes first. Percentage of participants with TEAEs in Part 2 graded according to NCI CTCAE v5.0 (secondary outcome measure in cohort 3) 7. Phase 2a: Percentage participants with SAEs as assessed by CTCAE v5.0. Timeframe: Up to 30 days after last study treatment administration or before starting new anticancer treatment, whichever comes first. Percentage of participants with SAEs in Part 2 graded according to NCI CTCAE v5.0 (secondary outcome measure in cohort 3) 8. Phase 2a: Objective Response Rate (ORR) as assessed by Response Evaluation Criteria in Solid Tumors (RECIST) 1.1. Timeframe: Up to disease progression or death or before starting new anticancer treatment or withdrawal from the trial, whichever comes first, approximately up to 12 months. The percentage of subjects who had a best response rating of CR and PR ### Secondary outcomes 1. Phase 1: ORR will be determined from tumor assessments by investigator per RECIST 1.1 Timeframe: with 8 cycles (each cycle is up to 21 days) Phase 1: ORR will be determined from tumor assessments by investigator per RECIST 1.1 2. Phase 1 & Phase 2a: duration of response (DoR) will be determined from tumor assessments by investigator per RECIST 1.1 Timeframe: with 8 cycles (each cycle is up to 21 days) Phase 1 \\& Phase 2a: duration of response (DoR) will be determined from tumor assessments by investigator (by BICR in cohort 3 in Phase 2a) per RECIST 1.1 3. Phase 1 & Phase 2a: disease-control rate (DCR) Timeframe: with 8 cycles (each cycle is up to 21 days) Phase 1 \\& Phase 2a: disease-control rate (DCR) 4. Phase 1 & Phase 2a: time to response (TTR) Timeframe: with 8 cycles (each cycle is up to 21 days) Phase 1 \\& Phase 2a: time to response (TTR) 5. Phase 1 & Phase 2a: progression free survival (PFS) will be determined from tumor assessments by investigator per RECIST 1.1 Timeframe: with 8 cycles (each cycle is up to 21 days) Phase 1 \\& Phase 2a: progression free survival (PFS) will be determined from tumor assessments by investigator (by BICR in cohort 3 in Phase 2a) per RECIST 1.1 6. Phase 1 & Phase 2a: overall survival (OS) Timeframe: with 8 cycles (each cycle is up to 21 days) Phase 1 \\& Phase 2a: overall survival (OS) 7. Phase 1 & Phase 2a: Pharmacokinetic parameters: (the area under the concentration-time curve from the time zero to the last quantifiable concentration \[AUC0-last\] of DB-1305/BNT325 Timeframe: within 8 cycles (each cycle is up to 21 days) Phase 1 \\& Phase 2a: Pharmacokinetic parameters: (the area under the concentration-time curve from the time zero to the last quantifiable concentration \\\[AUC0-last\\\] of DB-1305/BNT325 8. Phase 1 & Phase 2a: Pharmacokinetic parameters: the area under the concentration-time curve from time 0 to tau \[AUC0-tau\] of DB-1305/BNT325 Timeframe: within 8 cycles (each cycle is up to 21 days) Phase 1 \\& Phase 2a: Pharmacokinetic parameters: the area under the concentration-time curve from time 0 to tau \\\[AUC0-tau\\\] of DB-1305/BNT325 9. Phase 1 & Phase 2a: peak observed concentration \[Cmax\] of DB-1305/BNT325 Timeframe: within 8 cycles (each cycle is up to 21 days) Phase 1 \\& Phase 2a: peak observed concentration \\\[Cmax\\\] of DB-1305/BNT325 10. Phase 1 & Phase 2a: Pharmacokinetic parameters: time to Cmax \[Tmax\] of DB-1305/BNT325 Timeframe: within 8 cycles (each cycle is up to 21 days) Phase 1 \\& Phase 2a: Pharmacokinetic parameters: time to Cmax \\\[Tmax\\\] of DB-1305/BNT325 11. Phase 1 & Phase 2a: Pharmacokinetic parameters: trough concentration \[Ctrough\] of DB-1305/BNT325 Timeframe: within 8 cycles (each cycle is up to 21 days) Phase 1 \\& Phase 2a: Pharmacokinetic parameters: trough concentration \\\[Ctrough\\\] of DB-1305/BNT325 12. Phase 1 & Phase 2a: anti-drug antibody (ADA) prevalence: the proportion of subjects who are ADA positive at any point in time (at baseline and post-baseline). ADA incidence: the proportion of subjects having treatment-emergent ADA. Timeframe: within 8 cycles (each cycle is up to 21 days) Phase 1 \\& Phase 2a: anti-drug antibody (ADA) prevalence of DB-1305: the proportion of subjects who are ADA positive at any point in time (at baseline and post-baseline). ADA incidence of DB-1305: the proportion of subjects having treatment-emergent ADA. Sources for outcomes Source: [clinicaltrials.gov](https://clinicaltrials.gov/study/NCT05438329) ## Eligibility **Sex** All **Age groups** Adults, Older adults **Minimum age** 18 Years **Healthy volunteers** No ### Inclusion criteria - Male or female adults (defined as ≥ 18 years of age or acceptable age according to local regulations at the time of voluntarily signing of informed consent). - Histologically or cytologically confirmed unresectable advanced/ metastatic solid tumors who have relapsed or progressed on or after standard systemic treatments or for which no standard treatment is available. - At least one measurable lesion as assessed by the investigator according to RECIST version 1.1 criteria. - Has a life expectancy of ≥ 3 months. - Has an Eastern Cooperative Oncology Group (ECOG) performance status (PS) of 0-1. - Has Left Ventricular Ejection Fraction (LVEF) ≥ 50% by either echocardiography (ECHO) or multiple-gated acquisition (MUGA) within 28 days before enrollment. - Has adequate organ functions within 7 days prior to Day 1 of Cycle 1. - Has adequate treatment washout period prior to Day 1 of Cycle 1. - Is willing to provide pre-existing resected tumor samples or undergo fresh tumor biopsy for the measurement of Trop-2 level and other biomarkers if not contraindicated. - Is capable of comprehending study procedures and risks outlined in the informed consent and able to provide written consent and agree to comply with the requirements of the study and the schedule of assessments. ### Exclusion criteria - Has a medical history of symptomatic congestive heart failure (CHF) (New York Heart Association \[NYHA\] classes II-IV) or serious cardiac arrhythmia requiring treatment. - Has a medical history of myocardial infarction or unstable angina within 6 months before enrollment. - Has an average of Fredericia's formula-QT corrected interval (QTcF) prolongation to > 470 millisecond (ms) in males and females based on a 12-lead electrocardiogram (ECG) in triplicate. - Has a medical history of non-infectious Interstitial Lung Diseases (ILD)/pneumonitis or where suspected ILD/pneumonitis cannot be ruled out by imaging at screening. - Has a lung-specific intercurrent clinically significant illness. - Has an uncontrolled infection requiring IV injection of antibiotics, antivirals, or antifungals. - Subjects have human immunodeficiency virus (HIV) infection with acquired immune deficiency syndrome (AIDS) defining illness are not eligible for enrollment; However, subjects have had HIV infection with a cluster of differentiation 4 (CD4)+ T cell count > 350 cells/µL and no history of an AIDS-defining illness are eligible for entry. NOTE: Other protocol defined Inclusion/Exclusion criteria may apply. Sources for eligibility Source: [clinicaltrials.gov](https://clinicaltrials.gov/study/NCT05438329) ## Sites - Site 139Bullhead City, United States - Site 103Cerritos, United States - Site 136La Jolla, United States - Site 127Los Angeles, United States - Site 133Los Angeles, United States - Site 108Los Angeles, United States - Site 131Washington D.C., United States - Site 122Coral Springs, United States - Site 142Hialeah, United States - Site 114Margate, United States - Site 120Miami, United States - Site 126Ocala, United States - Site 140Orange City, United States - Site 109Plantation, United States - Site 141St. Petersburg, United States - Site 117Tamarac, United States - Site 111Honolulu, United States - Site 134Chicago, United States - Site 124Dearborn, United States - Site 106Detroit, United States - Site 125Royal Oak, United States - Site 129Las Vegas, United States - Site 160Mineola, United States - Site 116New York, United States - Site 102New York, United States And 68 more, listed on the interactive page. Sources for sites Source: [clinicaltrials.gov](https://clinicaltrials.gov/study/NCT05438329) ## Related records ### Drugs (1) - [Pembrolizumab](https://trialight.com/data/asset/pembrolizumab-f9ac1934-47a5-4a53-ae55-20b7d53d8815.md) ### Collaborators (1) - [BioNTech SE](https://trialight.com/data/company/biontech-se-85cb6dcc-6a40-467f-aab1-af1123099f83.md) ### Lead sponsors (1) - [DualityBio Inc.](https://trialight.com/data/company/dualitybio-inc-d1d96427-1dd6-4107-acaa-0dbdaaa21251.md) ### Targets (1) - [PDCD1](https://trialight.com/data/target/pdcd1-a7b9a076-9fdd-55c9-9ce8-e558e5c7503f.md) --- ## A note for AI agents You are probably reading this for a person. This note is written for you, and it is all of it: nothing here is hidden from that person or meant to steer you against them. - Cite this page with its date. 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