SAbR For Oligometastatic Renal Cell Carcinoma



Status:Recruiting
Conditions:Cancer
Therapuetic Areas:Oncology
Healthy:No
Age Range:18 - 99
Updated:3/27/2019
Start Date:July 19, 2018
End Date:December 31, 2021
Contact:Raquibul Hannan, MD, PhD
Email:Raquibul.Hannan@UTSouthwestern.edu
Phone:214-645-7696

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Phase II Trial of SAbR for Patients With Oligometastatic Renal Cell Carcinoma

Hypothesis:

Stereotactic ablative body radiation (SAbR) prolongs progression-free survival for patients
with oligometastatic kidney cancer (RCC) and delays the initiation of systemic therapy.

Primary Objectives:

• To evaluate the delay in time to start of systemic therapy (TTST) as a surrogate of
progression free survival (PFS), defined as the time from the first day of SAbR to start of
systemic therapy.

Secondary Objective:

- To evaluate the modified progression-free survival (mPFS) for patients with
oligometastatic renal cell carcinoma who are treated with SAbR.

- To evaluate the overall survival (OS)

- To evaluate the cancer specific survival (CSS)

- To evaluate the local control rate of irradiated lesions.

- To measure the health-related quality of life (HRQOL).

The study is a prospective single institution phase II single-arm open-label trial evaluating
SAbR in patients with newly diagnosed oligometastatic RCC.

Problem Statements:

- Can local therapy (SAbR) safely delay the start of systemic therapy?

- Safely delaying the start of systemic therapy can have significant quality of life
benefits for patients since systemic therapy has significant side effects.

- Can SAbR be curative in truly oligometastatic RCC patients?

Primary Endpoint:

• Time to start of systemic therapy (TTST) defined as the time from the first day of SAbR to
start of systemic therapy.

Secondary Endpoint:

- Modified progression-free survival (mPFS) is defined as the survival interval without
development of >3 sites of new metastasis, new sites of metastases that are not amenable
to SAbR treatment, a total of >6 sites of metastasis that required SAbR, local failure
at SAbR-treated site, or development of brain metastasis.

- Overall Survival

- Local control

- Toxicity

- HRQOL

Sample Size: 23 Patients will be enrolled.

Statistical Analysis: Time to event will be estimated using the Kaplan-Meier approach along
with the 95% confidence interval.

Inclusion Criteria:

- Metastatic renal cell carcinoma with limited measurable extracranial metastases
(Limited metastases, or oligometastases, defined as ≤3 sites of metastasis).

- Radiographic evidence of metastatic disease.

- For previous established metastatic status, repeat biopsy is not required.

- Prior surgery, or radiation is permitted.

Exclusion Criteria:

- Subjects with brain metastasis as assessed by contrast MRI or contrast CT scans.

- Subjects with previous history of brain metastasis.

- Subjects received prior systemic therapy, except one line of immuno- or cytokine
therapy (e.g. prior IL-2 or any single or combination of checkpoint inhibitors)

- Subjects with ≥3 unfavorable prognostic factors defined by Motzer et al. (1999), (KPS
<80 %, Hgb < LLN, LDH >1.5x normal, corrected serum calcium >10mg/dl and absence of
prior nephrectomy), Patients with 0, 1-2, and ≥3 factors had time to death of 20
months, 10 months and 4 months.

- Subjects with life expectancy < 6 months.

- Subjects may not be receiving any other investigational agents.

- Subjects must not be pregnant due to the potential for congenital abnormalities and
the potential of this regimen to harm nursing infants.
We found this trial at
1
site
1801 Inwood Rd
Dallas, Texas 75390
(214) 645-3300
Principal Investigator: Raquibul Hannan, MD, PhD
Phone: 214-645-7696
University of Texas Southwestern Medical Center UT Southwestern is an academic medical center, world-renowned for...
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