The RADIANCE multicenter, randomized phase II trial will assess the efficacy of durvalumab, a
PD-L1 immune checkpoint inhibitor, in combination with primary mitomycin C
(MMC)/5-fluorouracil (5-FU)-based radiochemotherapy (RCT) in patients with locally-advanced
anal squamous cell carcinoma (ASCC).
Anal squamous cell carcinomas (ASCC) are increasing in frequency across the developed world.
There is a strong rationale for combining the PD-L1 immune checkpoint inhibitor durvalumab
with radiochemotherapy (RCT) in patients with ASCC. First, although primary RCT with
concurrent mitomycin C and 5-fluorouracil (MMC/5-FU) is the standard treatment for ASCC, the
3-year DFS in patients with locally-advanced disease is only in the range of 60%. Second,
approximately 80-90% of patients with ASCC are human papilloma virus (HPV)-positive, which is
associated with higher tumor "immunogenicity" in this malignancy that is known to correlate
with better response to RCT as well as PD-1/PD-L1 immune checkpoint inhibitors. Also, PD-L1
expression was observed in 33%-62% of patients with locally advanced non-metastatic ASCC that
correlated with tumor stage. Third, inhibition of the PD-1/PD-L1 axis showed encouraging
responses in recurrent/metastatic ASCC in two phase Ib/II trials. Fourth, several data
indicate complementary roles between R(C)T and immunotherapy. Fifth, R(C)T can induce PD-L1
upregulation with resulting dysfunction in CD8+ T-cells, and addition of anti-PD-L1 to R(C)T
can overcome T-cell suppression to reinvigorate immune surveillance. First clinical studies
have demonstrated promising findings for the combination of RCT and immunotherapies. Thus,
based on the above data, RCT combined with durvalumab is expected to be more effective than
primary RCT alone. Altogether, the hereby proposed RADIANCE multicenter, randomized phase II
trial aims to improve the current standard treatment by incorporating durvalumab to the
primary MMC/5-FU-based RCT in patients with locally-advanced ASCC (T2=>4cm Nany, stage
IIB-IIIC).
Inclusion Criteria:
- Histologically-confirmed ASCC (both genders) of the anal canal or the anal margin
- UICC-Stage IIB-IIIC including T2>4cm Nany (IIB: T3N0M0; IIIA: T1-2N1M0; IIIB: T4N0M0;
IIIC: T3-4N1M0; T2>4cm Nany) according to proctoscopy, pelvic MRI, CT scan of thorax
and abdomen, all within 30 days prior to recruitment
- Age ≥ 18 years, no upper age limit
- ECOG-Performance score 0-1
- History/physical examination within 30 days prior to recruitment
- Written informed consent and any locally-required authorization (e.g. EU Data Privacy
Directive in the EU) obtained from the patient prior to performing any
protocol-related procedures, including screening evaluations
- Life expectancy of > 12 months
- Body weight >30kg
- Hemoglobin ≥9.0 g/dl
- Leukocytes >3.5 x 10 ^9/l
- Absolute neutrophil count (ANC) 1.5 x 10 9/l (> 1500 per mm3)
- Platelet count ≥100 x 109/l (>100,000 per mm3)
- Serum bilirubin ≤1.5 x institutional upper limit of normal (ULN). (This will not apply
to patients with confirmed Gilbert's syndrome (persistent or recurrent
hyperbilirubinemia that is predominantly unconjugated in the absence of hemolysis or
hepatic pathology), who will be allowed only in consultation with their physician.
- AST (SGOT), ALT (SGPT), AP ≤ 3x institutional ULN
- Calculated creatinine CL>40 mL/min by the Cockcroft-Gault formula creatinine clearance
- Female subject of childbearing potential should have a negative serum pregnancy within
72 hours prior to receiving the first dose of durvalumab. A highly sensitive pregnancy
test must be used.
- Female subjects of childbearing potential must be willing to use a highly effective
contraceptive measure as defined in the Clinical Trial Facilitation Group (CTFG)
guideline ("Recommendations related to contraception and pregnancy testing in clinical
trials"). Highly effective contraception is required from screening to 90 days after
the last dose of durvalumab. (Note: Abstinence is acceptable if this is the usual
lifestyle and preferred contraception for the subject.)
- Male subjects of childbearing potential must agree to use a highly effective method of
contraception, starting from screening to 90 days after the last dose of durvalumab.
(Note: Abstinence is acceptable if this is the usual lifestyle and preferred
contraception for the subject.) Male patients should refrain from fathering a child or
donating sperm during the study and for 180 days after the last dose of durvalumab +
any drug combination therapy or 90 days after the last dose of durvalumab monotherapy,
whichever is the longer time period.
- Patient is willing and able to comply with the protocol for the duration of the study
including undergoing treatment and scheduled visits and examinations including follow
up.
- For HIV-positive patients: running combined antiretroviral therapy (CART) on a stable
dose at study entry and undetectable HIV-viral load (HIV Viral load <50 copies/mL and
CD4>200/Mircoliter). Patients will be closely monitored and CART management will be
performed according to appropriate labelling guidance of the antiviral therapy. CART
should be on a stable dose at study entry.
Exclusion Criteria:
- UICC-Stage I-IIA ASCC defined as cT1N0M0 or cT2 <4cm N0M0 disease
- Second malignancy other than basalioma or cervical/genital/ neoplasia in situ
- History of another primary malignancy except for:
- Malignancy treated with curative intent and with no known active disease ≥5 years
before the first dose of durvalumab and of low potential risk for recurrence
- Adequately treated non-melanoma skin cancer or lentigo maligna without evidence
of disease
- Adequately treated carcinoma in situ without evidence of disease
- Known DPD-deficiency
- Participation in another clinical study with an investigational product during the
last 12 months
- Concurrent enrolment in another clinical study, unless it is an observational
(non-interventional) clinical study or during the follow-up period of an
interventional study
- Any previous treatment with other immunotherapy, a PD1 or PD-L1 inhibitor
- QT interval corrected for heart rate (QTc) ≥470 ms
- Current or prior use of immunosuppressive medication within 14 days before the first
dose of durvalumab, with the exceptions of intranasal and inhaled corticosteroids or
systemic corticosteroids at physiological doses, which are not to exceed 10 mg/d of
prednisone, or an equivalent corticosteroid. In case of recent introduction of CART,
inclusion will be possible provided subjects had at least 4 weeks of treatment prior
to inclusion.
- Any unresolved toxicity NCI CTCAE Grade ≥2 from previous anticancer therapy with the
exception of alopecia, vitiligo, and the laboratory values defined in the inclusion
criteria:
- Patients with Grade ≥2 neuropathy will be evaluated on a case-by-case basis after
consultation with the Study Chairman.
- Patients with irreversible toxicity not reasonably expected to be exacerbated by
treatment with durvalumab may be included only after consultation with the Study
Chairman
- Any concurrent chemotherapy, biologic, or hormonal therapy for cancer treatment, other
than the study medication. Concurrent use of hormonal therapy for non-cancer-related
conditions (e.g., hormone replacement therapy) is acceptable.
- Previous radiotherapy treatment to the pelvis or radiotherapy treatment to more than
30% of the bone marrow or with a wide field of radiation within 4 weeks of the first
dose of study drug
- Major surgical procedure (as defined by the Investigator) within 28 days prior to the
first dose of durvalumab.
- History of allogenic organ transplantation.
- Active or prior documented autoimmune or inflammatory disorders (including
inflammatory bowel disease [e.g., colitis or Crohn's disease], diverticulitis [with
the exception of diverticulosis], systemic lupus erythematosus, Sarcoidosis syndrome,
or Wegener syndrome [granulomatosis with polyangiitis, Graves' disease, rheumatoid
arthritis, hypophysitis, uveitis, etc]). The following are exceptions to this
criterion:
- Patients with vitiligo or alopecia
- Patients with hypothyroidism (e.g., following Hashimoto syndrome) stable on
hormone replacement
- Any chronic skin condition that does not require systemic therapy
- Patients without active disease in the last 5 years may be included but only
after consultation with the study chairman
- Patients with celiac disease controlled by diet alone
- Uncontrolled intercurrent illness, including but not limited to, ongoing or active
infection, symptomatic congestive heart failure, uncontrolled hypertension, unstable
angina pectoris, cardiac arrhythmia, interstitial lung disease, serious chronic
gastrointestinal conditions associated with diarrhoea, or psychiatric illness/social
situations that would limit compliance with study requirement, substantially increase
risk of incurring AEs or compromise the ability of the patient to give written
informed consent
- History of leptomeningeal carcinomatosis or any other metastatic disease
- History of active primary immunodeficiency
- Active infection including tuberculosis (clinical evaluation that includes clinical
history, physical examination and radiographic findings, and TB testing in line with
local practice), hepatitis B (known positive HBV surface antigen (HBsAg) result),
hepatitis C. Patients with a past or resolved HBV infection (defined as the presence
of hepatitis B core antibody [anti-HBc] and absence of HBsAg) are eligible. Patients
positive for hepatitis C (HCV) antibody are eligible only if polymerase chain reaction
is negative for HCV RNA.
- Receipt of live attenuated vaccine within 30 days prior to the first dose of
durvalumab. Note: Patients, if enrolled, should not receive live vaccine whilst
receiving durvalumab and up to 30 days after the last dose of durvalumab.
- Known allergy or hypersensitivity to any of the study/investigational drugs or any of
the study/investigational drug excipients and/or radiochemotherapy with 5-FU and
Mitomycin C.
- Female patients who are pregnant or breastfeeding or male or female patients of
reproductive potential who are not willing to employ effective birth control from
screening to 90 days after the last dose of durvalumab.
