Pazopanib Hydrochloride in Treating Patients With Advanced Thyroid Cancer

Status:Active, not recruiting
Conditions:Cancer, Endocrine, Thyroid Cancer
Therapuetic Areas:Endocrinology, Oncology
Age Range:19 - Any
Start Date:February 22, 2008

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A Phase II Study of GW 786034 (Pazopanib) in Advanced Thyroid Cancer

This phase II trial studies the side effects and how well pazopanib hydrochloride works in
treating patients with advanced thyroid cancer. Pazopanib hydrochloride may stop the growth
of tumor cells by blocking some of the enzymes needed for cell growth and by stopping blood
flow to the tumor.


I. To establish the safety and efficacy of GW786034 (pazopanib hydrochloride) as a
therapeutic in patients afflicted with differentiated, medullary and anaplastic thyroid


I. Assessment of the impact of therapy with GW786034 on serum/plasma vascular endothelial
growth factor (VEGF) levels.

II. To explore the potential relationship between changes in thyroglobulin levels and tumor
response in patients with advanced differentiated thyroid cancer known to be thyroglobulin
antibody negative.


Patients receive pazopanib hydrochloride orally (PO) once daily (QD) on days 1-28. Courses
repeat every 28 days in the absence of disease progression or unacceptable toxicity.

After completion of study treatment, patients are followed up every 6 months for up to 3
years after registration.

Inclusion Criteria:

- Histologically or cytologically confirmed differentiated, medullary or anaplastic
thyroid cancer that is now advanced or metastatic; NOTE: patients with thyroid
lymphomas or sarcomas are specifically excluded, as are patients with metastatic
disease from other sites of origin to thyroid

- Patients with confirmed differentiated thyroid cancer to be enrolled in the
expanded/additional differentiated thyroid cancer (DTC) cohort must be thyroglobulin
antibody negative

- Zero, one or two prior therapeutic regimens (this includes cytotoxic plus
non-cytotoxic therapeutic regimens)

- Absence of sensitivity to therapeutic radioiodine (differentiated only)

- Measurable disease, defined as at least one lesion that can be accurately measured in
at least one dimension (longest diameter to be recorded) as > 20 mm with conventional
techniques or as > 10 mm with spiral computed tomography (CT) scan; NOTE: disease that
is measurable by physical examination only is not eligible

- Life expectancy > 3 months

- Eastern Cooperative Oncology Group (ECOG) performance status (PS) 0, 1, or 2
(Karnofsky >= 60%)

- Leukocytes > 3,000/mcL obtained =< 7 days prior to registration

- Absolute neutrophil count > 1,500/mcL obtained =< 7 days prior to registration

- Platelets > 100,000/mcL obtained =< 7 days prior to registration

- Total bilirubin =< 1.5 X institutional upper limit of normal (ULN) obtained =< 7 days
prior to registration (if there is reason to believe that the patient has Gilbert's
syndrome, the bilirubin can be fractionated; if the fractionated bilirubin is
consistent with Gilbert's syndrome and there is no other possible explanation for the
elevated indirect bilirubin, the patient may be eligible for the study if and only if
the direct bilirubin is =< 1.5 X institutional ULN)

- Aspartate aminotransferase (AST) (serum glutamic oxaloacetic transaminase [SGOT]) <
2.5 X institutional ULN obtained =< 7 days prior to registration

- Creatinine =< 1.5 X ULN obtained =< 7 days prior to registration

- Proteinuria =< + on urinalysis (may re-check) obtained =< 7 days prior to registration

- International normalized ratio (INR) =< 1.2 X the ULN obtained =< 7 days prior to

- Blood pressure (BP) < 140 mmHg (systolic) and < 90 mmHg (diastolic); initiation or
adjustment of BP medication is permitted prior to registration provided that the
average of three BP readings at a visit prior to registration is < 140/90 mmHg

- Objective evidence of tumor progression in the 6 month period prior to GW786034
initiation as assessed by:

- Unequivocal progression of objectively measured disease on successive appropriate
imaging (e.g. CT scan); in cases of uncertainty of tumor progression, the
principal investigator of the study will be available to assist in decisions

- Women of child-bearing potential must have a negative serum pregnancy test =< 7 days
prior to registration; NOTE: women of child-bearing potential and men must agree to
use adequate contraception (hormonal or barrier method of birth control; abstinence)
prior to study entry and for the duration of study participation; should a woman
become pregnant or suspect she is pregnant while participating in this study, she
should inform her treating physician immediately; effective contraception is required
for all fertile participants in the trial

- Ability to understand and the willingness to sign a written informed consent document

- Willingness to comply with the requirement of the study

- Willingness to donate blood for correlative marker studies; (only applicable to sites
within the United States)

Exclusion Criteria:

- Anaplastic, differentiated, medullary: a total of > 2 prior therapeutic regimens (this
total includes cytotoxic plus non-cytotoxic regimens); Note: enrollment of anaplastic,
differentiated, and medullary patients who have had zero, one or two prior therapeutic
regimens (cytotoxic plus non-cytotoxic regimens) is allowed - provided therapy ceased
> 21 days prior to registration;

- NOTE: the principal investigator of the study should be contacted in the event of
uncertainty related patient eligibility based upon prior therapies

- Disease that is measurable by physical examination only

- Any of the following:

- Radiotherapy =< 4 weeks prior to registration

- Major surgery =< 4 weeks prior to registration

- Radiotherapy to >= 25% of bone marrow

- Concurrent therapy with octreotide unless tumor progression on this therapy has
been demonstrated

- Any other ongoing investigational agents

- History of allergic reactions attributed to compounds of similar chemical or biologic
composition to GW786034 (pazopanib) or other agents used in the study

- > +1 proteinuria (< 30 mg/dL) on two consecutive dipstick or other urine assessments
taken at least 1 week apart; NOTE: (in cases where questions arise related to
disparate proteinuria measurements, the study principal investigator [PI] should be
consulted for assistance in determining patient study eligibility)

- Corrected QT interval (QTc) prolongation (defined as a QTc interval >= 480 msecs) or
other significant electrocardiogram (ECG) abnormalities (e.g. frequent ventricular
ectopy, evidence of ongoing myocardial ischemia); NOTE: the principal investigator of
the study should be contacted in the event of uncertainty related patient eligibility
based upon ECG changes

- Receiving cytochrome P450 (CYP) interactive concomitant medications; certain
medications that act through the CYP450 system are specifically prohibited in patients
receiving GW786034 (pazopanib) because in vitro data indicate that the agent has the
potential to interact with the cytochrome P450 isoenzymes cytochrome P450, family 2,
subfamily C, polypeptide 9 (CYP2C9) and cytochrome P450, family 3, subfamily A,
polypeptide 4 (CYP3A4); certain other agents should be used with caution

- Any condition (e.g., gastrointestinal tract disease resulting in an inability to take
oral medication or a requirement for IV alimentation, prior surgical procedures
affecting absorption, or active peptic ulcer disease) that impairs their ability to
swallow and retain GSK786034 (pazopanib)

- Any of the following conditions:

- Serious or non-healing wound, ulcer, or bone fracture

- History of abdominal fistula, gastrointestinal perforation, active
diverticulitis, intra-abdominal abscess or gastrointestinal tract bleeding =< 28
days of registration

- Any history of cerebrovascular accident (CVA) =< 6 months

- Current use of therapeutic warfarin; Note: low molecular weight heparin and
prophylactic low-dose warfarin (INR < 1.2 X ULN) are permitted; prothrombin time
(PT)/partial thromboplastin time (PTT) must meet the inclusion criteria

- History of myocardial infarction, cardiac arrhythmia, admission for unstable
angina, cardiac angioplasty or stenting within the last 12 weeks

- History of venous thrombosis in last 12 weeks

- Class III or IV heart failure as defined by the New York Heart Association (NYHA)
functional classification system; NOTE: a patient who has a history of class II
heart failure and is asymptomatic on treatment may be considered eligible

- History of bleeding disorder, including patients afflicted with hemophilia,
disseminated intravascular coagulation, or any other abnormality of coagulation
potentially predisposing patients to bleeding

- Poorly controlled depression or anxiety disorder, or recent (=< 6 months)
suicidal ideation

- Known active and/or untreated brain metastases and/or brain metastases requiring
ongoing therapy (e.g. corticosteroids); NOTE: (because of the poor prognosis often
associated with brain metastases and because of the potential risk of bleeding in
active brain metastases associated with multi-targeted tyrosine kinase inhibitor
therapy, patients with active and/or untreated brain metastases and/or those with
brain metastases requiring ongoing therapy - e.g. corticosteroids - are excluded from
trial enrollment; enrollment will, however, be permitted in cases of patients with
longstanding treated and inactive brain metastases not requiring ongoing therapy,
providing that stability of brain metastases has been demonstrated for a period of 3
months or greater as assessed by intracranial imaging - and providing that there is no
indication of increased vascularity of the treated metastases by magnetic resonance
imaging (MRI) imaging conducted =< 14 days prior to registration; when questions arise
related to these criteria, the PI of the trial, Dr. Keith Bible, should be contacted
for assistance on eligibility)

- Uncontrolled intercurrent illness including, but not limited to, ongoing or active
infection or psychiatric illness/social situations that would or might reasonably be
expected to limit compliance with study requirements

- Pregnant women; NOTE: (breastfeeding should be discontinued if the mother is treated
with GW786034/pazopanib)

- Human immunodeficiency virus (HIV)-positive patients on combination antiretroviral
therapy; NOTE: (appropriate studies will be undertaken in patients receiving
combination antiretroviral therapy when indicated)

- Receiving any medications or substances known to affect or with the potential to
affect the activity or pharmacokinetics of GW786034 (pazopanib); NOTE: the eligibility
of patients will be determined following review of their case by the principal
investigator; efforts should be made to switch patients who are taking enzyme-inducing
anticonvulsant agents to other medications

- Receiving any concomitant medications that are associated with a risk of QTc
prolongation and/or Torsades de Pointes; NOTE: these medications should be
discontinued or replaced with drugs that do not carry these risks, if possible
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