Skip to content

A Study of Safety, Tolerability and Preliminary Efficacy of NTS071 in Subjects With Advanced Solid Tumors Harboring a TP53 Y220C Mutation

A Phase 1/2a Study Evaluating the Safety, Tolerability, Pharmacokinetics, and Preliminary Efficacy of NTS071 in Subjects With Advanced Solid Tumors Harboring a TP53 Y220C Mutation

Status
Recruiting
Phases
Phase 1Phase 2
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT07060989
Acronym
NTS071
Enrollment
220
Registered
2025-07-11
Start date
2025-08-04
Completion date
2029-12-01
Last updated
2026-06-24

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Advanced Solid Tumors

Keywords

Advanced Solid Tumors, TP53 Y220C

Brief summary

This study is to evaluate the safety, tolerability, PK, and preliminary efficacy of NTS071 in adults with TP53 Y220C-mutated solid tumors.

Detailed description

This is a Phase 1/2a, first-in-human, open-label, multi-center study with the aim of exploring the safety, tolerability, PK, and preliminary efficacy of NTS071 in subjects with unresectable locally advanced or metastatic solid tumors containing a TP53 Y220C mutation. This study includes two parts: Phases 1 and 2a. The Phase 1 part consists of the dose escalation and backfill part; The Phase 2a part consists of the cohort expansion part.

Interventions

DRUGNTS071

Oral administration

Sponsors

Nutshell Therapeutics (Shanghai) Co., LTD.
Lead SponsorINDUSTRY

Study design

Allocation
NA
Intervention model
SINGLE_GROUP
Primary purpose
TREATMENT
Masking
NONE

Eligibility

Sex/Gender
ALL
Age
18 Years to No maximum
Healthy volunteers
No

Inclusion criteria

1. Male or female subjects, ≥ 18 years 2. Advanced solid tumors with TP53 Y220C mutation 3. Previously treated with one or more lines of anticancer therapy and progressive disease 4. At least one measurable lesion according to RECIST version 1.1 criteria 5. Eastern Cooperative Oncology Group performance status (ECOG PS) of 0 or 1 6. Adequate organ and bone marrow function

Exclusion criteria

1. Known CNS primary tumor and active or untreated CNS metastases 2. History of another primary malignancy that has been diagnosed or required therapy within the past 2 years 3. Toxicities of prior therapy have not been resolved to ≤ Grade 1 or to baseline 4. Significant cardiovascular disease, including congestive heart failure 5. Known hepatitis B, hepatitis C, or human immunodeficiency virus infection that is active 6. Have a known psychiatric or substance abuse disorder that would interfere with the participant's ability to cooperate with the requirements of the study.

Design outcomes

Primary

MeasureTime frameDescription
Phase 1: Number of dose-limiting toxicity (DLT)The first 26 days of treatment (Cycle 1) per patientIncidence of dose-limiting toxicity (DLT) events
Phase 1: incidence of adverse events (AE), serious adverse events (SAEs)up to 30 days after the last administrationAdverse events will be assessed by investigator(s) according to NCI-CTCAE v5.0
Phase 2a: Overall Response Rate (ORR)Up to 3 yearsORR is defined as the percentage of participants with confirmed complete response (CR) or partial response (PR) by Response Evaluations Criteria in Solid Tumors Version 1.1 (RECIST v1.1)

Secondary

MeasureTime frameDescription
Phase 1/2a: area under the curve (AUC)Up to 2 yearsPK parameters to be evaluated for NTS071 including area under the curve (AUC) will be determined when appropriate.
Phase 1/2a: maximum concentration (Cmax)Up to 2 yearsPK parameters to be evaluated for NTS071 including maximum concentration (Cmax) will be determined when appropriate.
Phase 1/2a: half-life (t1/2) of NTS071Up to 2 yearsPK parameters to be evaluated for NTS071 including half-life (t1/2) will be determined when appropriate.
Phase 1/2a: trough observed concentrations (Ctrough/Ctau)Up to 2 yearsPharmacokinetic parameters will be determined by non-compartmental methods using pharmacokinetic profile of NTS071
Phase 1: Objective response rate (ORR)Up to 3 yearsTo evaluate the preliminary antitumor activity of NTS071
Phase 1/2a: duration of response (DoR)Up to 3 yearsTo evaluate the preliminary anti-tumor activity of NTS071
Phase 1/2a: disease control rate (DCR)Up to 3 yearsTo evaluate the preliminary antitumor activity of NTS071
Phase 1/2a: progression-free survival (PFS)Up to 3 yearsTo evaluate the preliminary antitumor activity of NTS071
Phase 1/2a: Overall survival (OS)Up to 3 yearsTo evaluate the preliminary antitumor activity of NTS071

Countries

China, United States

Contacts

CONTACTYan Xu
yan.xu@allonutshell.com+86 13585878226

Outcome results

None listed

Source: ClinicalTrials.gov · Data processed: Jun 25, 2026