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A Trial of Tadalafil in Patients With Squamous Cell Carcinoma of the Upper Aero Digestive Tract

A Phase II Trial of Tadalafil in Patients With Squamous Cell Carcinoma of the Upper Aero Digestive Tract

Status
Completed
Phases
Phase 2
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT00894413
Enrollment
45
Registered
2009-05-07
Start date
2007-05-08
Completion date
2012-03-31
Last updated
2019-06-11

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

Conditions

Head and Neck Squamous Cell Carcinoma

Brief summary

The purpose of this trial is to determine whether or not Cialis (tadalafil) administered to head and neck squamous cell cancer patients augments immune response.

Interventions

DRUGTadalafil

20 mg once daily for 10 - 14 days

OTHERPlacebo Pill

Placebo

Sponsors

National Cancer Institute (NCI)
CollaboratorNIH
Sidney Kimmel Comprehensive Cancer Center at Johns Hopkins
Lead SponsorOTHER

Study design

Allocation
RANDOMIZED
Intervention model
PARALLEL
Primary purpose
TREATMENT
Masking
DOUBLE (Subject, Investigator)

Eligibility

Sex/Gender
ALL
Age
18 Years to 99 Years
Healthy volunteers
No

Inclusion criteria

1. Histologically confirmed, previously untreated invasive head and neck squamous cell carcinoma OR histologically confirmed not yet treated recurrent head and neck squamous cell carcinoma (must be at least 3 months after diagnosis and completion of treatment for primary disease or last recurrence). 2. Disease location amenable to biopsy in outpatient clinical setting or operative biopsy within routine accepted schedule and practice of clinical care 3. No medical contraindication to biopsy of target lesion. 4. ECOG performance status 0-1 5. Required laboratory data (to be obtained within 4 weeks of initiation): * Platelets \> 75,000/mm³ * Calculated Creatinine Clearance (CRCL)\> 60 mL/min iii. Total serum bilirubin \< 1.5 mg/dL. * No intercurrent illness likely to prevent protocol therapy or surgical resection 6. Patients with a history of a curatively treated malignancy must be disease-free and have a survival prognosis that exceeds five years. 7. Female patients must not be pregnant or breast feeding. A negative pregnancy test is required within 14 days of randomization for all women of childbearing potential. 8. Willingness and ability to give signed written informed consent.

Exclusion criteria

1. Known severe hypersensitivity to tadalafil or any of the excipients of this product 2. Patients who have a concurrent malignancy or a history of previous malignancy treated with curative therapy within the last 3 months (other than squamous/basal cell cancer of the skin or cervical cancer) who have a survival prognosis of \< 5 years. 3. Treatment with a non-approved or investigational drug within 30 days before day 1 of trial treatment. 4. Incomplete healing from previous oncologic or other major surgery. 5. Pregnancy or breast feeding (women of childbearing potential). 6. As judged by the investigator, any evidence of severe or uncontrolled systemic disease (e.g., unstable or uncompensated respiratory, cardiac, hepatic, or renal disease). 7. Evidence of any other significant clinical disorder or laboratory finding that makes it undesirable for the subject to participate in the trial. 8. Current therapy with ketoconazole or oral antifungal therapy. 9. History of significant hypotensive episode requiring hospitalization. 10. A history of acute myocardial infarction within prior 3 months, uncontrolled angina, 11. Uncontrolled arrhythmia, or uncontrolled congestive heart failure 12. Age \< 18 13. History of any of the following cardiac conditions: * Angina requiring treatment with long-acting nitrates. * Angina requiring treatment with short-acting nitrates within 90 days of planned tadalafil administration. * Unstable angina within 90 days of visit 1 (Braunwald 1989). * Positive cardiac stress test without documented evidence of subsequent, effective cardiac intervention. 14. History of any of the following coronary conditions within 90 days of planned tadalafil administration: * Myocardial Infarction. * Coronary artery bypass graft surgery. * Percutaneous coronary intervention (for example, angioplasty or stent placement). * Any evidence of heart disease (NYHA≥Class III as defined in Protocol Attachment LVHG.3) within 6 months of planned tadalafil administration 15. Current treatment with nitrates. 16. Current systemic treatment with a potent cytochrome P450 3A4 (CYP3A4) inhibitor such as ketoconazole or ritonavir. 17. Received treatment within the last 30 days with a drug or device that has not received regulatory approval for any indication at the time of Visit 1. 18. Prior chronic immune suppressive state (AIDS, immunosuppressive therapy). 19. History of hypotension and/or blindness during prior treatment with Tadalafil or other PDE-5 inhibitors. 20. prior history of non-arterial ischemic optic retinopathy

Design outcomes

Primary

MeasureTime frameDescription
Change in Immune Response After Tadalafil AdministrationChange from baseline to up to 14 days post-interventionMedian fold-change in immune response of T-cell expansion, delayed-type hypersensitivity reactions, CD4/CD69, CD8/CD69. A positive value indicates an increase in immune response.

Countries

United States

Participant flow

Pre-assignment details

5 subjects were screen failures

Participants by arm

ArmCount
Placebo
Placebo Pill: Placebo
15
Tadalafil
Tadalafil: 20 mg once daily for 10 - 14 days
17
Total32

Withdrawals & dropouts

PeriodReasonFG000FG001
Overall StudyAdverse Event02
Overall StudyPhysician Decision02
Overall StudyWithdrawal by Subject04

Baseline characteristics

CharacteristicPlaceboTotalTadalafil
Age, Continuous55 years
STANDARD_DEVIATION 6
58 years
STANDARD_DEVIATION 12
60 years
STANDARD_DEVIATION 15
Clinical stage
Node (N) stage : N0/N1
7 Participants14 Participants7 Participants
Clinical stage
Node (N) stage : N2/N3
8 Participants17 Participants9 Participants
Clinical stage
Tumor (T) stage : T0/Tx/T1/T2
12 Participants18 Participants6 Participants
Clinical stage
Tumor (T) stage : T3/T4
3 Participants13 Participants10 Participants
Ethanol (ETOH) Exposure
Ever
7 Participants17 Participants10 Participants
Ethanol (ETOH) Exposure
Never
6 Participants10 Participants4 Participants
Human Papilloma Virus (HPV) status
Negative
6 Participants16 Participants10 Participants
Human Papilloma Virus (HPV) status
Positive
8 Participants13 Participants5 Participants
Human Papilloma Virus (HPV) status
Unknown
1 Participants3 Participants2 Participants
Race/Ethnicity, Customized
Black/other
2 Participants5 Participants3 Participants
Race/Ethnicity, Customized
White
13 Participants27 Participants14 Participants
Region of Enrollment
United States
15 Participants32 Participants17 Participants
Sex: Female, Male
Female
2 Participants3 Participants1 Participants
Sex: Female, Male
Male
13 Participants29 Participants16 Participants
Site of Squamous Cell Carcinoma
Hypopharynx/larynx
1 Participants7 Participants6 Participants
Site of Squamous Cell Carcinoma
Oral cavity
5 Participants7 Participants2 Participants
Site of Squamous Cell Carcinoma
Oropharynx
9 Participants15 Participants6 Participants
Site of Squamous Cell Carcinoma
Unknown
0 Participants3 Participants3 Participants
Tobacco exposure
Ever
7 Participants21 Participants14 Participants
Tobacco exposure
Never
8 Participants10 Participants2 Participants

Adverse events

Event typeEG000
affected / at risk
EG001
affected / at risk
deaths
Total, all-cause mortality
0 / 150 / 25
other
Total, other adverse events
0 / 150 / 25
serious
Total, serious adverse events
2 / 151 / 25

Outcome results

Primary

Change in Immune Response After Tadalafil Administration

Median fold-change in immune response of T-cell expansion, delayed-type hypersensitivity reactions, CD4/CD69, CD8/CD69. A positive value indicates an increase in immune response.

Time frame: Change from baseline to up to 14 days post-intervention

Population: Data was not evaluable in 1/15 participants from the placebo group, 2/17 participants in the tadalafil group (for T-cell expansion, CD4/CD69, CD/CD69) and 1/17 for DTH area.

ArmMeasureGroupValue (MEDIAN)
PlaceboChange in Immune Response After Tadalafil AdministrationT-cell expansion1.13 fold change
PlaceboChange in Immune Response After Tadalafil AdministrationDTH area1.14 fold change
PlaceboChange in Immune Response After Tadalafil AdministrationCD4/CD690.90 fold change
PlaceboChange in Immune Response After Tadalafil AdministrationCD8/CD690.93 fold change
TadalafilChange in Immune Response After Tadalafil AdministrationCD8/CD691.14 fold change
TadalafilChange in Immune Response After Tadalafil AdministrationT-cell expansion1.59 fold change
TadalafilChange in Immune Response After Tadalafil AdministrationCD4/CD691.29 fold change
TadalafilChange in Immune Response After Tadalafil AdministrationDTH area4.74 fold change

Source: ClinicalTrials.gov · Data processed: Mar 3, 2026