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Impact of Using a GLP1 on Treatment Related Side Effects of Lung Cancer Patients Receiving Lorlatinib

Impact of Tirzepatide on Lorlatinib-Associated Weight Gain and Metabolic Derangements in Patients With Non-Small Cell Lung Cancer (NSCLC)

Status
Not yet recruiting
Phases
Phase 1
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT07782359
Acronym
NSCLC
Enrollment
30
Registered
2026-08-24
Start date
2026-10-01
Completion date
2030-06-01
Last updated
2026-08-24

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

Conditions

Lung Cancer

Brief summary

The proposed study seeks to address a critical gap in the management of lorlatinib-induced metabolic derangements, particularly rapid weight gain, which can adversely affect treatment adherence, dosing and ultimately patient outcomes. In this study patients with non-small cell lung cancer (NSCLC) receiving lorlatinib treatment will receive tirzepatide, a dual GIP/GLP-1 receptor agonist with demonstrated efficacy in weight reduction and metabolic improvement. This study seeks to evaluate its potential to mitigate side effects while preserving the therapeutic efficacy of lorlatinib.

Interventions

DRUGTirzepatide

Participants will receive tirzepatide with weekly subcutaneous injections at 2.5 mg, following a structured dose escalation protocol over 20 weeks to reach the target dose of 15 mg per week or the maximum tolerated dose.

Sponsors

University of Chicago
Lead SponsorOTHER
Pfizer
CollaboratorINDUSTRY

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

* Age ≥ 18 years * Receiving lorlatinib as first-line treatment for advanced NSCLC ALK-positive, already prescribed and administered by the patient's treating oncologist as standard of care at the time of study enrollment. This study does not initiate lorlatinib therapy or assign lorlatinib dosing; participants must already be receiving lorlatinib prior to enrollment

Exclusion criteria

* Known hypersensitivity to GLP-1 agonists. * Active, unstable psychiatric illness; current suicidal ideation * Severe organ dysfunction or systemic illness. * Anorexia nervosa * History of pancreatitis * Personal or family history of medullary thyroid carcinoma or multiple endocrine neoplasia syndrome type 2 * Current use of Glucagon-Like Peptide-1 Receptor Agonists (GLP-1 RA) or glucose-dependent insulinotropic polypeptide (GIP) and glucagon-like peptide-1 (GLP-1) \[GLP-1 RA/GIP\] co-agonist use within the last 90 days prior to screening * Current anti-obesity medication use (other than GLP-1 RA) or dipeptidyl peptidase-4 (DPP4) inhibitor use or use within the last 30 days prior to screening * Pregnant, breastfeeding or planning pregnancy

Design outcomes

Primary

MeasureTime frameDescription
Body weight changes1 year post treatment startTo assess the effect of tirzepatide, on change in body weight in patients taking lorlatinib.
Lipid changes1 year post treatment startTo assess the effect of tirzepatide on change in lipid profile High-density lipoprotein (HDL), low-density lipoprotein (LDL), total cholesterol, triglycerides) at 52 weeks compared to baseline.
Change in Cmax1 year post treatment startDetermine if the peak concentration of Lorlatinib is significantly altered when co-administered with tirzepatide.
Change in Tmax1 year post treatment startAssess if the time to peak concentration is delayed due to tirzepatide's effect on gastric emptying.
Bioavailability1 year post treatment startEvaluate partial AUC to estimate the extent of drug absorption.

Secondary

MeasureTime frameDescription
Rate of metabolic side effects1 year from start of treatmentNumber of Common Terminology Criteria for Adverse Events (CTCAE) Grade 1-3 metabolic side effects
Changes in body mass composition1 year from start of treatmentChanges in body mass will be measured using Bioelectrical Impedance Analysis (BIA).
Changes in waist circumference1 year from start of treatment
Changes in cardiometabolic markers1 year from start of treatmentThe number of participants that experience a change in cardiometabolic markers will be reported. This includes changes in blood tests for any of the following: Hemoglobin A1c (HbA1c), insulin, glucose, Apolipoprotein B (ApoB), homocysteine, C-reactive protein (CRP), and lipoprotein(a) (Lp(a))

Countries

United States

Contacts

CONTACTClinical Trials Intake Intake
cancerclinicaltrials@bsd.uchicago.edu855-702-8222
PRINCIPAL_INVESTIGATORMarina Garassino

University of Chicago

Outcome results

None listed

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