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Daratumumab plus VMP a potential therapy for transplant-ineligible multiple myeloma

Roshini Claire Anthony
05 Jan 2018
Prof Jesus San-Miguel

The addition of daratumumab to a bortezomib-melphalan-prednisone (VMP) regimen appears to improve progression-free survival (PFS) over VMP alone in individuals newly diagnosed with multiple myeloma who are ineligible for stem-cell transplantation, according to findings from the phase III ALCYONE* trial.

“In this first phase III randomized study with a monoclonal antibody in [newly diagnosed multiple myeloma], daratumumab plus VMP [D-VMP] reduced the risk of progression or death by 50 percent,” said senior study author Professor Jesus San-Miguel from the Clínica Universidad de Navarra, Pamplona, Spain, who presented the results at ASH 2017.

Researchers of this multinational, open-label trial randomized 706 patients (median age 71 years, median 0.8 months since diagnosis) with newly diagnosed multiple myeloma who were ineligible for stem-cell transplantation to receive VMP (subcutaneous bortezomib [1.3 mg/m2 BIW on weeks 1, 2, 4, and 5 of cycle 1 and QW on weeks 1, 2, 4, and 5 of cycles 2–9], oral melphalan [9 mg/m2 QD on days 1–4 of each cycle], and oral prednisone [60 mg/m2 QD on days 1–4 of each cycle]), or D-VMP (with additional intravenous daratumumab [16 mg/kg at doses of 20 mg QW in cycle 1, Q3WK in cycles 2–9, and Q4WK until disease progression or toxicity]) for up to nine cycles (42 days per cycle).

After a 16.5-month median follow-up period, PFS was longer in patients in the D-VMP compared with the VMP arm (not reached vs 18.1 months), with a PFS rate of 71.6 percent vs 50.2 percent at 18 months (hazard ratio, 0.50, 95 percent confidence interval, 0.38–0.65; p<0.001). [ASH 2017, abstract LBA-4; New Engl J Med 2017;doi:10.1056/NEJMoa1714678]

Compared with patients in the VMP arm, those on D-VMP had a better overall response rate (90.9 percent vs 73.9 percent; p<0.001) with a better median duration of response (not reached vs 21.3 months) and a higher rate of complete response or better (42.6 percent vs 24.4 percent; p<0.001). 

More patients on D-VMP than VMP tested negative for minimal residual disease (MRD**; 22.3 percent vs 6.2 percent; p<0.001).

“D-VMP induced significantly deeper responses including a more than threefold higher MRD-negative rate,” said San-Miguel.

“In this trial, negative status for [MRD] was associated with longer [PFS] than positive status, irrespective of trial treatment,” said San-Miguel and co-authors.

The most common grade 3–4 adverse events (AEs) were neutropenia (39.9 and 38.7 percent of patients on D-VMP and VMP, respectively), thrombocytopenia (34.4 and 37.6 percent, respectively), and anaemia (15.9 and 19.8 percent, respectively). Grade 3–4 infections occurred more frequently in patients on D-VMP compared with VMP (23.1 percent vs 14.7 percent), the most common being pneumonia (11.3 percent vs 4.0 percent).

Serious AEs occurred in 41.6 and 32.5 percent of patients on D-VMP and VMP, respectively, though treatment discontinuation due to AEs was less common with D-VMP than VMP (4.9 percent vs 9.0 percent).

“Monoclonal antibodies like daratumumab have already been approved for use in relapsed patients; here, we are showing that the benefits extend to newly diagnosed patients, as well,” said San-Miguel.

“Three phase III studies have now demonstrated a consistent doubling of PFS and more than threefold increase in MRD-negativity rate when combining [daratumumab] with [standard-of-care] regimens,” said San-Miguel and co-authors.

“ALCYONE strongly supports D-VMP as a standard of care in transplant-ineligible [newly diagnosed multiple myeloma],” he said.

 

 

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Most Read Articles
22 Jan 2018
In a symposium chaired by Dr Yoon-Sim Yap of the National Cancer Centre Singapore, renowned regional and international experts in the field of breast cancer, Dr Yen-Shen Lu from Taiwan and Professor Nadia Harbeck from Germany, joined her in providing insights on the current treatment landscape of hormone receptor-positive (HR+) advanced breast cancer. In their respective sessions, they each highlighted new therapeutic options including the optimal use of dual blockade therapy for oestrogenreceptor-positive (ER+) advanced breast cancer for patients in Asia. 
Pearl Toh, 19 Dec 2016
Osimertinib, a third-generation epidermal growth factor receptor (EGFR) tyrosine kinase inhibitor (TKI), showed significantly greater efficacy than platinum-pemetrexed therapy in advanced non-small cell lung cancer (NSCLC) patients positive for T790M mutation, including those with central nervous system (CNS) metastases, according to data from the AURA3* trial.
Rachel Soon, 06 Feb 2017

An RM6 million shortfall may delay the development of the first immunotherapeutic vaccine to target oral cancers, according to a local team of scientists.

Naomi Adam, 01 Apr 2014

Colorectal cancer (CRC) is one of the most common cancers worldwide and its incidence is rising among Asians. Long-term survival outcomes are poor for CRC because patients often remain undiagnosed until the disease has reached an advanced stage. Panitumumab, a human IgG2 monoclonal antibody with high binding affinity for epidermal growth factor receptors, has shown encouraging results in the treatment of metastatic CRC (mCRC).