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A Study of LY3434172, a PD-1 and PD-L1 Bispecific Antibody, in Advanced Cancer

A Phase 1 Study of LY3434172, a Bispecific Antibody Monotherapy in Advanced Solid Tumors

Status
Terminated
Phases
Phase 1
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT03936959
Enrollment
10
Registered
2019-05-03
Start date
2019-05-24
Completion date
2021-04-29
Last updated
2025-01-15

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

Conditions

Advanced Cancer

Keywords

PD-1, PD-L1

Brief summary

The main purpose of this study is to evaluate the safety and tolerability of the study drug LY3434172, a PD-1/PD-L1 bispecific antibody, in participants with advanced solid tumors.

Interventions

DRUGLY3434172

Administered IV

Sponsors

Eli Lilly and Company
Lead SponsorINDUSTRY

Study design

Allocation
NON_RANDOMIZED
Intervention model
SINGLE_GROUP
Primary purpose
TREATMENT
Masking
NONE

Eligibility

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

Inclusion criteria

* Must have histological or cytological evidence of a diagnosis of cancer that is not amenable/resistant to approved standard-of-care therapy for the following solid tumors: Melanoma, non-small cell lung cancer (NSCLC), squamous cell carcinoma of the head and neck (SCCHN), urothelial cancer, gastric cancer, colorectal cancer, biliary tract cancer, anal cancer, nasopharyngeal cancer, esophageal cancer, SCLC, ovarian cancer, mesothelioma, pan-tumor MSIhi solid tumors, hepatocellular carcinoma, merkel cell cancer, cutaneous squamous cell carcinoma, endometrial cancer, breast cancer, cervical cancer, thyroid cancer, salivary cancer, and prostate cancer who have received at least one line of standard systemic therapy for their respective tumor type in the metastatic setting with progressive locally advanced or metastatic disease. Prior anti-programmed death 1 (PD-1) and anti-programmed death ligand 1 (PD-L1) allowed if they received another therapy immediately prior to this study or there has been a lapse of approximately ≥90 days from prior therapy. * Must be willing to undergo pretreatment and on-treatment core needle or excisional tumor biopsies. * Have at least one measurable lesion assessable as defined by the Response Evaluation Criteria in Solid Tumors (RECIST) 1.1. * Have adequate organ function. * Have a performance status of 0 or 1 on the Eastern Cooperative Oncology Group (ECOG) scale. * Have an estimated life expectancy of 12 weeks, in the judgment of the investigator.

Exclusion criteria

* Have symptomatic central nervous system (CNS) malignancy or metastasis not requiring concurrent treatment, including but not limited to surgery, radiation, corticosteroids and/or anticonvulsants to treat CNS metastases, and their disease is asymptomatic and radiographically stable for at least 30 days. * Have moderate or severe cardiovascular disease. * Have active or suspected autoimmune disease (eg. autoimmune vasculitis, autoimmune myocarditis, among others). * Have serious concomitant systemic disorder that would compromise the participant's ability to adhere to the protocol, including known infection with human immunodeficiency virus (HIV) unless they are well controlled on highly active antiretroviral therapy (HAART) therapy with no evidence of acquired immune deficiency syndrome (AIDS)-defining opportunistic infections within the last 2 years, and CD4 T-cells count \> 350 cells/µl , active hepatitis B virus (HBV), active hepatitis C virus (HCV), active autoimmune disorders, or prior documented severe autoimmune or inflammatory disorders requiring immunosuppressive treatment. * Use of escalating or chronic supraphysiologic doses of corticosteroids or immunosuppressive agents (such as, exceeding 10 milligrams/day of prednisone or equivalent). Use of topical, ophthalmic, inhaled, and intranasal corticosteroids permitted. * Bowel obstruction, history or presence of inflammatory enteropathy or extensive intestinal resection, Crohn's disease, ulcerative colitis, or chronic diarrhea. * Evidence of interstitial lung disease or noninfectious pneumonitis (active or treated by corticosteroid therapy).

Design outcomes

Primary

MeasureTime frameDescription
Number of Participants With Dose Limiting Toxicities (DLTs)Baseline through Cycle 1 (Up to 42 Day Cycle)A DLT is defined as adverse event/s of grade 3 or higher that occurs during the DLT observation period, which is Cycle 1 of each dose escalation cohort, and is clinically significant and definitely, probably, or possibly related to LY3434172, in the opinion of the investigator.

Secondary

MeasureTime frameDescription
PK: Maximum Concentration (Cmax) of LY3434172PK: Cycle 1 Day 1 (C1D1): Predose; 1 hour(h); 3 h; 24 h; 72 h; 168 h post-infusion; C1D15: Predose; 1 h; 3 h; 24 h; 72 h; 168 h post-infusionPK: Cmax of LY3434172
PK: Area Under the Curve From Zero to Time to Last Measurable Concentration (AUC0-tlast) of LY3434172PK: Cycle 1 Day 1 (C1D1): Predose; 1 hour(h); 3 h; 24 h; 72 h; 168 h post-infusion; C1D15: Predose; 1 h; 3 h; 24 h; 72 h; 168 h post-infusionPK: AUC 0-tlast of LY3434172
Objective Response Rate (ORR): Percentage of Participants With a Complete Response (CR) or Partial Response (PR)Baseline through Measured Progressive Disease (Up to 8.4 Months)ORR: Percentage of participants who have received any amount of study drug, have at least one postbaseline tumor image, and achieved a best overall response (BOR) of confirmed Complete Response (CR) is defined a disappearance of all target lesions. Any pathological lymph nodes (whether target or non-target) must have reduction in short axis to \<10 mm. Disappearance of all non-target lesions and normalization of tumor marker level. All lymph nodes must be non-pathological in size (\<10 mm short axis). Partial Response (PR) is defined as at least a 30% decrease in the sum of diameters of target lesions, taking as reference the baseline sum diameters.
Pharmacokinetics (PK): Minimum Concentration (Cmin) of LY3434172PK: Cycle 1 Day 1 (C1D1): Predose; 1 hour(h); 3 h; 24 h; 72 h; 168 h post-infusion; Cycle 1 Day 15 (C1D15): Predose; 1 h; 3 h; 24 h; 72 h; 168 h post-infusionPK: Cmin of LY3434172
Time to Response (TTR)Baseline to Date of CR or PR (Up to 8.4 Months)TTR is defined as the time from the date of first study treatment until the first evidence of confirmed CR or PR.
Disease Control Rate (DCR): Percentage of Participants Who Exhibit Stable Disease (SD), CR or PRBaseline through Measured Progressive Disease (Up to 8.4 Months)Disease control rate is defined as the number of participants with SD, confirmed PR, or confirmed CR (CR+PR+SD) divided by the number of enrolled participants who have received any quantity of study treatment.
Duration of Response (DOR)Date of CR or PR to Date of Objective Progression or Death Due to Any Cause (Up to 8.4 Months)DOR is defined only for responders (participants with a confirmed CR or PR). It is measured from the date of first evidence of a confirmed CR or PR to the date of the first observed radiographically documented progressive disease (PD), or the date of death due to any cause, whichever is earlier. If a responder is not known to have died or have objective progression as of the data inclusion cutoff date, DoR will be censored at the date of the last complete objective progression-free disease assessment.

Countries

Australia, Belgium, France, South Korea, United States

Participant flow

Pre-assignment details

Completers are defined as participants who were observed for both primary and secondary outcomes.

Participants by arm

ArmCount
3 mg - 10 mg LY3434172
3 mg LY3434172 administered IV on Day 1 Cycle 1 of 28-day cycle. 10 mg LY3434172 administered IV on Day 15 Cycle 1 of 28-day cycle. Participants continued to receive study treatment until they met a criterion for discontinuation.
3
30 mg LY3434172
30 mg LY3434172 administered IV on Day 1 and Day 15 of 28-day cycle. Participants continued to receive study treatment until they met a criterion for discontinuation.
4
100 mg LY3434172
100 mg LY3434172 administered IV on Day 1 and Day 15 of 28-day cycle. Participants continued to receive study treatment until they met a criterion for discontinuation.
3
Total10

Baseline characteristics

Characteristic3 mg - 10 mg LY343417230 mg LY3434172100 mg LY3434172Total
Age, Categorical
<=18 years
0 Participants0 Participants0 Participants0 Participants
Age, Categorical
>=65 years
2 Participants1 Participants2 Participants5 Participants
Age, Categorical
Between 18 and 65 years
1 Participants3 Participants1 Participants5 Participants
Race (NIH/OMB)
American Indian or Alaska Native
0 Participants0 Participants0 Participants0 Participants
Race (NIH/OMB)
Asian
0 Participants0 Participants2 Participants2 Participants
Race (NIH/OMB)
Black or African American
0 Participants1 Participants0 Participants1 Participants
Race (NIH/OMB)
More than one race
0 Participants0 Participants0 Participants0 Participants
Race (NIH/OMB)
Native Hawaiian or Other Pacific Islander
0 Participants0 Participants0 Participants0 Participants
Race (NIH/OMB)
Unknown or Not Reported
1 Participants0 Participants0 Participants1 Participants
Race (NIH/OMB)
White
2 Participants3 Participants1 Participants6 Participants
Region of Enrollment
Australia
0 Participants0 Participants1 Participants1 Participants
Region of Enrollment
Belgium
1 Participants1 Participants1 Participants3 Participants
Region of Enrollment
South Korea
0 Participants0 Participants1 Participants1 Participants
Region of Enrollment
United States
2 Participants3 Participants0 Participants5 Participants
Sex: Female, Male
Female
2 Participants3 Participants1 Participants6 Participants
Sex: Female, Male
Male
1 Participants1 Participants2 Participants4 Participants

Adverse events

Event typeEG000
affected / at risk
EG001
affected / at risk
EG002
affected / at risk
deaths
Total, all-cause mortality
0 / 31 / 42 / 3
other
Total, other adverse events
3 / 34 / 43 / 3
serious
Total, serious adverse events
1 / 31 / 41 / 3

Outcome results

Primary

Number of Participants With Dose Limiting Toxicities (DLTs)

A DLT is defined as adverse event/s of grade 3 or higher that occurs during the DLT observation period, which is Cycle 1 of each dose escalation cohort, and is clinically significant and definitely, probably, or possibly related to LY3434172, in the opinion of the investigator.

Time frame: Baseline through Cycle 1 (Up to 42 Day Cycle)

Population: All participants who received any quantity of LY3434172, regardless of their eligibility for the study.

ArmMeasureValue (COUNT_OF_PARTICIPANTS)
3 mg - 10 mg LY3434172Number of Participants With Dose Limiting Toxicities (DLTs)0 Participants
30 mg LY3434172Number of Participants With Dose Limiting Toxicities (DLTs)0 Participants
100 mg LY3434172Number of Participants With Dose Limiting Toxicities (DLTs)0 Participants
Secondary

Disease Control Rate (DCR): Percentage of Participants Who Exhibit Stable Disease (SD), CR or PR

Disease control rate is defined as the number of participants with SD, confirmed PR, or confirmed CR (CR+PR+SD) divided by the number of enrolled participants who have received any quantity of study treatment.

Time frame: Baseline through Measured Progressive Disease (Up to 8.4 Months)

Population: All participants who received any quantity of LY3434172, regardless of their eligibility for the study.

ArmMeasureValue (NUMBER)
3 mg - 10 mg LY3434172Disease Control Rate (DCR): Percentage of Participants Who Exhibit Stable Disease (SD), CR or PR66.7 percentage of participants
30 mg LY3434172Disease Control Rate (DCR): Percentage of Participants Who Exhibit Stable Disease (SD), CR or PR25.0 percentage of participants
100 mg LY3434172Disease Control Rate (DCR): Percentage of Participants Who Exhibit Stable Disease (SD), CR or PR66.7 percentage of participants
Secondary

Duration of Response (DOR)

DOR is defined only for responders (participants with a confirmed CR or PR). It is measured from the date of first evidence of a confirmed CR or PR to the date of the first observed radiographically documented progressive disease (PD), or the date of death due to any cause, whichever is earlier. If a responder is not known to have died or have objective progression as of the data inclusion cutoff date, DoR will be censored at the date of the last complete objective progression-free disease assessment.

Time frame: Date of CR or PR to Date of Objective Progression or Death Due to Any Cause (Up to 8.4 Months)

Population: All participants who received any quantity of LY3434172, regardless of their eligibility for the study.

ArmMeasureValue (MEDIAN)
100 mg LY3434172Duration of Response (DOR)NA Months
Secondary

Objective Response Rate (ORR): Percentage of Participants With a Complete Response (CR) or Partial Response (PR)

ORR: Percentage of participants who have received any amount of study drug, have at least one postbaseline tumor image, and achieved a best overall response (BOR) of confirmed Complete Response (CR) is defined a disappearance of all target lesions. Any pathological lymph nodes (whether target or non-target) must have reduction in short axis to \<10 mm. Disappearance of all non-target lesions and normalization of tumor marker level. All lymph nodes must be non-pathological in size (\<10 mm short axis). Partial Response (PR) is defined as at least a 30% decrease in the sum of diameters of target lesions, taking as reference the baseline sum diameters.

Time frame: Baseline through Measured Progressive Disease (Up to 8.4 Months)

Population: All participants who received any quantity of LY3434172, regardless of their eligibility for the study.

ArmMeasureGroupValue (NUMBER)
3 mg - 10 mg LY3434172Objective Response Rate (ORR): Percentage of Participants With a Complete Response (CR) or Partial Response (PR)Complete Response0 Percentage of participants
3 mg - 10 mg LY3434172Objective Response Rate (ORR): Percentage of Participants With a Complete Response (CR) or Partial Response (PR)Partial Response0 Percentage of participants
30 mg LY3434172Objective Response Rate (ORR): Percentage of Participants With a Complete Response (CR) or Partial Response (PR)Complete Response0 Percentage of participants
30 mg LY3434172Objective Response Rate (ORR): Percentage of Participants With a Complete Response (CR) or Partial Response (PR)Partial Response0 Percentage of participants
100 mg LY3434172Objective Response Rate (ORR): Percentage of Participants With a Complete Response (CR) or Partial Response (PR)Complete Response0 Percentage of participants
100 mg LY3434172Objective Response Rate (ORR): Percentage of Participants With a Complete Response (CR) or Partial Response (PR)Partial Response33.3 Percentage of participants
Secondary

Pharmacokinetics (PK): Minimum Concentration (Cmin) of LY3434172

PK: Cmin of LY3434172

Time frame: PK: Cycle 1 Day 1 (C1D1): Predose; 1 hour(h); 3 h; 24 h; 72 h; 168 h post-infusion; Cycle 1 Day 15 (C1D15): Predose; 1 h; 3 h; 24 h; 72 h; 168 h post-infusion

Population: All participants who received at least one dose of LY3434172 and had evaluable PK data.

ArmMeasureGroupValue (GEOMETRIC_MEAN)Dispersion
3 mg - 10 mg LY3434172Pharmacokinetics (PK): Minimum Concentration (Cmin) of LY3434172Cycle 1 Day 1NA nanogram per milliliter (ng/mL)
3 mg - 10 mg LY3434172Pharmacokinetics (PK): Minimum Concentration (Cmin) of LY3434172Cycle 1 Day 15NA nanogram per milliliter (ng/mL)
30 mg LY3434172Pharmacokinetics (PK): Minimum Concentration (Cmin) of LY3434172Cycle 1 Day 1775 nanogram per milliliter (ng/mL)Geometric Coefficient of Variation 107
30 mg LY3434172Pharmacokinetics (PK): Minimum Concentration (Cmin) of LY3434172Cycle 1 Day 151017 nanogram per milliliter (ng/mL)Geometric Coefficient of Variation 63
100 mg LY3434172Pharmacokinetics (PK): Minimum Concentration (Cmin) of LY3434172Cycle 1 Day 14150 nanogram per milliliter (ng/mL)Geometric Coefficient of Variation 254
100 mg LY3434172Pharmacokinetics (PK): Minimum Concentration (Cmin) of LY3434172Cycle 1 Day 155600 nanogram per milliliter (ng/mL)Geometric Coefficient of Variation 85
Secondary

PK: Area Under the Curve From Zero to Time to Last Measurable Concentration (AUC0-tlast) of LY3434172

PK: AUC 0-tlast of LY3434172

Time frame: PK: Cycle 1 Day 1 (C1D1): Predose; 1 hour(h); 3 h; 24 h; 72 h; 168 h post-infusion; C1D15: Predose; 1 h; 3 h; 24 h; 72 h; 168 h post-infusion

Population: All participants who received at least one dose of LY3434172 and had evaluable PK data.

ArmMeasureGroupValue (GEOMETRIC_MEAN)Dispersion
3 mg - 10 mg LY3434172PK: Area Under the Curve From Zero to Time to Last Measurable Concentration (AUC0-tlast) of LY3434172C1D17280 hour*nanogram per milliliter (hr*ng/mL)Geometric Coefficient of Variation 51
3 mg - 10 mg LY3434172PK: Area Under the Curve From Zero to Time to Last Measurable Concentration (AUC0-tlast) of LY3434172C1D15NA hour*nanogram per milliliter (hr*ng/mL)
30 mg LY3434172PK: Area Under the Curve From Zero to Time to Last Measurable Concentration (AUC0-tlast) of LY3434172C1D1584000 hour*nanogram per milliliter (hr*ng/mL)Geometric Coefficient of Variation 31.5
30 mg LY3434172PK: Area Under the Curve From Zero to Time to Last Measurable Concentration (AUC0-tlast) of LY3434172C1D15559000 hour*nanogram per milliliter (hr*ng/mL)Geometric Coefficient of Variation 239
100 mg LY3434172PK: Area Under the Curve From Zero to Time to Last Measurable Concentration (AUC0-tlast) of LY3434172C1D11900000 hour*nanogram per milliliter (hr*ng/mL)Geometric Coefficient of Variation 121
100 mg LY3434172PK: Area Under the Curve From Zero to Time to Last Measurable Concentration (AUC0-tlast) of LY3434172C1D153010000 hour*nanogram per milliliter (hr*ng/mL)Geometric Coefficient of Variation 19.9
Secondary

PK: Maximum Concentration (Cmax) of LY3434172

PK: Cmax of LY3434172

Time frame: PK: Cycle 1 Day 1 (C1D1): Predose; 1 hour(h); 3 h; 24 h; 72 h; 168 h post-infusion; C1D15: Predose; 1 h; 3 h; 24 h; 72 h; 168 h post-infusion

Population: All participants who received at least one dose of LY3434172 and had evaluable PK data.

ArmMeasureGroupValue (GEOMETRIC_MEAN)Dispersion
3 mg - 10 mg LY3434172PK: Maximum Concentration (Cmax) of LY3434172Cycle 1 Day 15NA ng/mL
3 mg - 10 mg LY3434172PK: Maximum Concentration (Cmax) of LY3434172Cycle 1 Day 1734 ng/mLGeometric Coefficient of Variation 19.1
30 mg LY3434172PK: Maximum Concentration (Cmax) of LY3434172Cycle 1 Day 18250 ng/mLGeometric Coefficient of Variation 17.7
30 mg LY3434172PK: Maximum Concentration (Cmax) of LY3434172Cycle 1 Day 1518600 ng/mLGeometric Coefficient of Variation 52.9
100 mg LY3434172PK: Maximum Concentration (Cmax) of LY3434172Cycle 1 Day 122700 ng/mLGeometric Coefficient of Variation 60.8
100 mg LY3434172PK: Maximum Concentration (Cmax) of LY3434172Cycle 1 Day 1543000 ng/mLGeometric Coefficient of Variation 58.5
Secondary

Time to Response (TTR)

TTR is defined as the time from the date of first study treatment until the first evidence of confirmed CR or PR.

Time frame: Baseline to Date of CR or PR (Up to 8.4 Months)

Population: All participants who received any quantity of LY3434172, regardless of their eligibility for the study.

ArmMeasureValue (MEDIAN)
100 mg LY3434172Time to Response (TTR)NA Months

Source: ClinicalTrials.gov · Data processed: Feb 4, 2026