Secura Bio Announces New Data Regarding the Combination of FARYDAK® (panobinostat) with Subcutaneous Bortezomib and Dexamethasone
LAS VEGAS, Feb. 2, 2021 /PRNewswire/ -- Secura Bio, Inc. ("SBI") - (www.securabio.com), an integrated, commercial-stage pharmaceutical company dedicated to the worldwide development and commercialization of impactful oncology therapies, today announces the publication of new data confirming the efficacy of the approved dose/schedule of FARYDAK(®) and demonstrating a considerably improved safety profile for FARYDAK in combination with subcutaneous ("SC") bortezomib (as opposed to intravenous administration) and oral dexamethasone.
Panobinostat ("Pano"), an oral pan-histone deacetylase inhibitor, is approved for the treatment of relapsed or relapsed/refractory multiple myeloma in combination with bortezomib (Velcade(®)) and dexamethasone in patients who have received >=2 prior lines of therapy, including bortezomib and an immunomodulatory agent ("IMiD"). The original registrational trial, PANORAMA-1, used intravenous ("IV") bortezomib, and demonstrated a significant progression-free survival benefit with FARYDAK / bortezomib / dexamethasone (FVd) as compared with placebo / bortezomib / dexamethasone (Vd); adverse events ("AEs") were expectedly reported as being more frequent with FVd (San-Miguel J. et al., Lancet Oncol. 20). A new study, PANORAMA-3, was undertaken to optimize FVd dosing by investigating three different Pano regimens with SC bortezomib (and oral dexamethasone).
In an oral poster presentation at the American Society of Hematology and in a subsequent publication in Lancet Oncology, results were reported for PANORAMA-3: Efficacy and Safety of the FVd combination in Relapsed or Relapsed/Refractory Multiple Myeloma. This study was a randomized, open-label, international, multicenter phase 2 study.
Eligible patients were >=18 years old with 1?4 prior lines of therapy, including an IMiD. Patients primarily refractory to bortezomib were excluded. Patients were randomized 1:1:1 to Pano 20 mg three times weekly (TIW; the currently approved dosing regimen); Pano 20 mg twice weekly (BIW), or Pano 10 mg three times weekly (TIW), all administered in 21-day cycles. Randomization was stratified by number of prior treatment lines (1 vs 2 vs 3 or 4) and by age at screening (<=75 vs >75 years). For Cycles 1-4, all patients <=75 years old received SC bortezomib 1.3 mg/m(2) BIW and oral dexamethasone 20 mg on the day of and day after bortezomib injection. Patients aged <=75 years from Cycle 5 onwards, and patients >75 years for all cycles, received SC bortezomib 1.3 mg/m(2) once weekly (QW) and oral dexamethasone 20 mg on the day of and day after bortezomib injection.
Patients were treated until progressive disease or death, or until discontinuation due to toxicity or withdrawal of consent. The primary endpoint was overall response rate (ORR; IMWG 2011 criteria) after up to 8 treatment cycles by Independent Review Committee assessment. Secondary endpoints included best response, time to response (TTR), duration of response (DOR), and safety.
Pano 20mg TIW dosing demonstrated efficacy results comparable to and more durable than those seen in PANORAMA-1, with an ORR of 62.2% (N=78), compared to 60.7% (n=387) in PANORAMA 1; and a median duration of response of 22 months, compared to 13.1 months in PANORAMA 1. For the 20mg TIW group, the incidence of diarrhea across all grades was 66.5% (versus 68% in PANORAMA-1), with Grade >3 diarrhea occurring in 11.5% of patients (versus 25% in PANORAMA-1). Further details of the efficacy and safety results can be found HERE for the ASH abstract and HERE for the Lancet Oncology paper.
The conclusion of the authors was that the 20 mg TIW and 20 mg BIW dosing regimens provided favorable outcomes, with the most durable and deepest responses observed in the 20 mg TIW arm. As noted in part above, rates of several important AEs, including severe diarrhea, with Pano 20 mg TIW were considerably lower in PANORAMA-3 than those observed with the same dosing regimen in PANORAMA- 1, suggesting SC administration of bortezomib meaningfully improves tolerability of the triplet, as compared with IV administration. All three regimens of FVd proved generally manageable. Pano 20 mg TIW yielded the greatest durable efficacy, most notably a median DOR of 22 months.
About Secura Bio, Inc.
Secura Bio is an integrated, commercial-stage pharmaceutical company dedicated to the worldwide commercialization of impactful oncology therapies for physicians and their patients. For more information on Secura Bio, please visit www.securabio.com
About FARYDAK (panobinostat)
INDICATION
FARYDAK(®) (panobinostat) capsules, a histone deacetylase inhibitor, in combination with bortezomib and dexamethasone, is indicated for the treatment of patients with multiple myeloma who have received at least 2 prior regimens, including bortezomib and an immunomodulatory agent. This indication is approved under accelerated approval based on progression-free survival. Continued approval for this indication may be contingent upon verification and description of clinical benefit in confirmatory trials
IMPORTANT SAFETY INFORMATION
WARNING: FATAL AND SERIOUS TOXICITIES: SEVERE DIARRHEA AND CARDIAC TOXICITIES
Severe diarrhea occurred in 25% of FARYDAK treated patients. Monitor for symptoms, institute anti-diarrheal treatment, interrupt FARYDAK and then reduce dose or discontinue FARYDAK.
Severe and fatal cardiac ischemic events, severe arrhythmias, and ECG changes have occurred in patients receiving FARYDAK. Arrhythmias may be exacerbated by electrolyte abnormalities. Obtain ECG and electrolytes at baseline and periodically during treatment as clinically indicated.
Diarrhea
-- Severe diarrhea occurred in 25% of patients treated with FARYDAK(®)
(panobinostat) capsules. Diarrhea of any grade occurred in 68% of
patients treated with FARYDAK compared with 42% of patients in the
control arm. Diarrhea can occur at any time. Ensure patients have
antidiarrheal medications on hand, and initiate antidiarrheal medication
at the onset of diarrhea
-- Monitor hydration status and electrolyte blood levels at baseline, and
weekly (or more often as clinically indicated) during therapy, and
correct to prevent dehydration and electrolyte disturbances
-- Interrupt FARYDAK at the onset of moderate diarrhea (4-6 stools/day
-- For life-threatening diarrhea (grade 4), permanently discontinue FARYDAK
and bortezomib
-- For severe diarrhea (>=7 stools/day), or IV fluids or hospitalization
required (grade 3), interrupt FARYDAK and bortezomib until resolved and
restart both at reduced doses
-- For moderate diarrhea (4-6 stools/day, grade 2), interrupt FARYDAK until
resolved and restart at same dose. Consider interruption of bortezomib
until resolved and restart at same dose
Cardiac Toxicities
-- Arrhythmias occurred in 12% of patients treated with FARYDAK compared
with 5% of patients in the control arm. Cardiac ischemic events occurred
in 4% of patients treated with FARYDAK compared with 1% of patients in
the control arm
-- Do not initiate FARYDAK treatment in patients with history of recent
myocardial infarction or unstable angina
-- ECG abnormalities such as ST-segment depression and T-wave abnormalities
occurred more frequently in patients receiving FARYDAK compared with the
control arm: 22% vs 4% and 40% vs 18%, respectively
-- FARYDAK may prolong QT interval. Do not initiate treatment with FARYDAK
in patients with a QTcF >450 msec or clinically significant baseline
ST-segment or T-wave abnormalities
-- Arrhythmias may be exacerbated by electrolyte abnormalities. If during
treatment with FARYDAK, the QTcF increases to >=480 msec, interrupt
treatment. Correct any electrolyte abnormalities. If QT prolongation
does not resolve, permanently discontinue treatment. Obtain ECG at
baseline and periodically during treatment. Monitor electrolytes during
treatment with FARYDAK, and correct abnormalities as clinically
indicated
Hemorrhage
-- Fatal and serious cases of gastrointestinal and pulmonary hemorrhage
occurred
-- In the phase 3 registration trial, 5 patients receiving FARYDAK,
compared with 1 patient in the control arm, died due to a hemorrhagic
event. All 5 patients had grade >=3 thrombocytopenia at the time of the
event
-- Grade 3/4 hemorrhage was reported in 4% of patients treated with FARYDAK
and 2% of patients in the control arm
-- Monitor platelet counts and transfuse as needed
Myelosuppression
-- FARYDAK causes myelosuppression including severe thrombocytopenia,
neutropenia, and anemia. Obtain a baseline CBC, and monitor the CBC
weekly during treatment (or more often if clinically indicated or in
patients >65 years of age)
-- Thrombocytopeni
-- In the phase 3 registration trial, 67% of patients treated with
FARYDAK developed Grade 3/4 thrombocytopenia compared with 31% in
the control arm
-- Thrombocytopenia led to treatment interruption and/or dose
modification in 31% of patients receiving FARYDAK
-- For patients receiving FARYDAK, 33% required platelet transfusion
-- For patients with platelet count <50 x 10(9)/L with bleeding (grade
3) or <25 x 10(9)/L (grade 4)
-- Interrupt FARYDAK therapy and monitor platelets at least weekly
until >=50 x 10(9)/L, and restart at reduced dose
-- Interrupt bortezomib until thrombocytopenia resolves >=50 x
10(9)/L
-- If only 1 dose of bortezomib was omitted prior to correction
to these levels, restart bortezomib at same dose
-- If >=2 doses were omitted consecutively, or within the same
cycle, restart at a reduced dose
-- For patients with platelet count <50 x 10(9)/L (grade 3), maintain
FARYDAK and bortezomib doses and monitor platelet counts at least
weekly
-- For patients with severe thrombocytopenia, consider platelet
transfusions
-- Discontinue FARYDAK if thrombocytopenia does not improve despite the
recommended treatment modifications or if repeated platelet
transfusions are required
-- Neutropenia
-- Severe neutropenia occurred in 34% of patients treated with FARYDAK
compared with 11% of patients in the control arm
-- Neutropenia led to treatment interruption and/or dose modification
in 10% of patients receiving FARYDAK
-- Use of granulocyte-colony stimulating factor (G-CSF) was 13% in
patients treated with FARYDAK® (panobinostat) capsules
-- For patients with ANC <0.5 x 10(9)/L (grade 4)
-- Interrupt FARYDAK and bortezomib therapy until ANC is >=1.0 x
10(9)/L. Restart FARYDAK at reduced dose
-- If only 1 dose of bortezomib was omitted prior to correction to
these levels, restart at same dose. If >=2 doses of bortezomib
were omitted consecutively, or within the same cycle, restart at
reduced dose
-- For patients with ANC <1.0 x 10(9)/L (grade 3) and febrile
neutropenia (any grade)
-- Interrupt FARYDAK and bortezomib therapy until febrile
neutropenia is resolved and ANC >1.0 x 10(9)/L
-- Restart FARYDAK at reduced dose
-- If only 1 dose of bortezomib was omitted prior to correction to
these levels, restart at same dose. If >=2 doses of bortezomib
were omitted consecutively, or within the same cycle, restart at
reduced dose
-- For patients with >=2 occurrences of ANC between 0.5 - 0.75 x
10(9)/L (grade 3)
-- Interrupt FARYDAK therapy until ANC >=1.0 x 10(9)/L, and restart
at same dose
-- Maintain bortezomib dose
-- For patients with ANC between 0.75 - 1.0 x 10(9)/L (grade 3)
-- Maintain FARYDAK and bortezomib doses
-- For grade 3 or 4 neutropenia, consider dose reduction and/or the use
of growth factors
-- Discontinue FARYDAK if neutropenia does not improve despite dose
modifications, CSF, or in case of severe infection
-- Anemia
-- For patients with hemoglobin <8 g/dL (grade 3), interrupt FARYDAK
until hemoglobin >=10 g/dL. Restart at reduced dose
Infections
-- Severe infections occurred in 31% of patients (including 10 deaths)
treated with FARYDAK compared with 24% of patients (including 6 deaths)
in the control arm
-- FARYDAK treatment should not be initiated in patients with active
infections
-- Monitor patients for signs and symptoms of infections during treatment;
if a diagnosis of infection is made, institute appropriate
anti-infective treatment promptly and consider interruption or
discontinuation of FARYDAK
Hepatotoxicity
-- Hepatic dysfunction, primarily elevations in aminotransferases and total
bilirubin, occurred in patients treated with FARYDAK
-- Monitor liver function prior to and regularly during treatment. If
abnormal liver function tests are observed, consider dose adjustments.
Follow patient until values return to normal or pretreatment levels
-- Avoid use in patients with severe hepatic impairment
-- Reduce the starting dose of FARYDAK to 15 mg or 10 mg in patients with
mild or moderate hepatic impairment, respectively
Embryo-Fetal Toxicity
-- FARYDAK can cause fetal harm when administered to a pregnant woman
-- If FARYDAK is used during pregnancy, or if the patient becomes pregnant
while taking FARYDAK, the patient should be apprised of the potential
hazard to the fetus
-- Advise females of reproductive potential to avoid becoming pregnant
while taking FARYDAK
-- Advise sexually active females of reproductive potential to use
effective contraception while taking FARYDAK, and for at least 3 months
after the last dose of FARYDAK
-- Advise sexually active men to use condoms while on treatment, and for at
least 6 months after their last dose of FARYDAK
DRUG INTERACTIONS
-- Reduce dose to 10 mg when coadministered with strong CYP3A inhibitors.
Instruct patients to avoid star fruit, pomegranate or pomegranate juice,
and grapefruit or grapefruit juice
-- Avoid the concomitant use of strong CYP3A inducers
-- Avoid coadministration with sensitive CYP2D6 substrates or CYP2D6
substrates that have a narrow therapeutic index. If concomitant use of
CYP2D6 substrates is unavoidable, monitor patients frequently for
adverse reactions
-- Concomitant use of antiarrhythmic medicines, and other drugs that are
known to prolong the QT interval, is not recommended. Antiemetic drugs
with known QT-prolonging risk can be used with frequent ECG monitoring
ADVERSE REACTIONS
-- The most common adverse reactions (incidence of at least 20%) in
clinical studies are diarrhea, fatigue, nausea, peripheral edema,
decreased appetite, pyrexia, and vomiting
-- The most common nonhematologic laboratory abnormalities (incidence
>=40%) are hypocalcemia, hypophosphatemia, hypoalbuminemia, hypokalemia,
hyponatremia, and increased creatinine. The most common hematologic
laboratory abnormalities (incidence >=60%) are thrombocytopenia,
lymphopenia, leukopenia, neutropenia, and anemia
-- Serious adverse events (SAEs) occurred in 60% of patients in the FARYDAK
arm. The most frequent (>=5%) treatment-emergent SAEs reported for
patients treated with FARYDAK were pneumonia, diarrhea,
thrombocytopenia, fatigue, and sepsis
Velcade(®) is a registered trademark of Takada Pharmaceutical Company Ltd.
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