Expert Highlights Immunotherapy Progress in Squamous Cell Lung Cancer

Excerpt:

“Combination regimens—particularly with checkpoint inhibitors and chemotherapy—are showing promise for the treatment of patients with squamous non–small cell lung cancer (NSCLC).

“Beyond the May 2017 FDA approval of pembrolizumab (Keytruda) plus carboplatin/pemetrexed for nonsquamous patients regardless of PD-L1 status, researchers are turning their focus to immunotherapy combinations in squamous patients in ongoing clinical trials. For example, the randomized, open-label, phase III IMpower131 study is evaluating the safety and efficacy of atezolizumab (Tecentriq) in combination with carboplatin/paclitaxel or carboplatin/nab-paclitaxel (Abraxane) versus carboplatin/nab-paclitaxel in chemotherapy-naïve patients with stage IV squamous NSCLC (NCT02367794). The trial, which has a primary endpoint of progression-free survival, is expected to enroll 1021 patients.”

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Dual HER2 Blockade Alone Yields Worse pCR in Early HER2-Positive Breast Cancer

Excerpt:

“A new randomized trial found that neoadjuvant trastuzumab/pertuzumab alone yields a substantially worse rate of pathologic complete response compared with trastuzumab/pertuzumab plus paclitaxel in women with early, HER2-positive, hormone receptor (HR)-negative breast cancer.

” ‘Pathologic complete response (pCR) after neoadjuvant [therapy] has strong prognostic impact in HER2 disease,’ wrote study authors led by Ulrike Nitz, MD, of the West German Study Group GmbH in Moenchengladbach, Germany. The WSG-ADAPT HER2+/HR− trial assessed whether dual blockade with trastuzumab and pertuzumab could achieve similar rates of pCR in those with strong early response to dual blockade along with chemotherapy.”

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Cryotherapy for Preventing Chemotherapy-Induced Peripheral Neuropathy in Patients With Breast Cancer

Excerpt:

“A self-controlled clinical trial by Hanai et al investigating the efficacy of cryotherapy for the prevention of chemotherapy-induced peripheral neuropathy in patients with breast cancer treated with paclitaxel has found that cryotherapy resulted in a clinically and statistically significant reduction in patient-reported subjective symptoms, diminished objective signs (tactile and thermosensory), and prevention of manipulative dexterity. These study findings suggest cryotherapy may be an effective strategy in the prevention of neuropathy in patients undergoing paclitaxel treatment. These study findings were published in the Journal of the National Cancer Institute.

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ASCO 2017: I-SPY 2 Trial: Combination of Pembrolizumab Plus Standard Neoadjuvant Therapy in High-Risk Breast Cancer

Excerpt:

“At the 2017 ASCO Annual Meeting, results were presented from the phase II I-SPY 2 trial investigating pembrolizumab (Keytruda) in combination with standard therapy (paclitaxel followed by doxorubicin and cyclophosphamide) as a neoadjuvant treatment for patients with locally advanced triple-negative breast cancer or hormone receptor–positive/HER2-negative breast cancer (Abstract 506).

“Findings showed that the addition of pembrolizumab increased the estimated pathologic complete response rate nearly threefold in patients with triple-negative breast cancer (60% vs 20%) and in patients with hormone receptor–positive/HER2-negative breast cancer (34% vs 13%) compared to standard therapy. Overall, based on Bayesian predictive probability of success in a confirmatory phase III trial, pembrolizumab has graduated from the I-SPY 2 TRIAL for all signatures in which it was tested (triple-negative breast cancer, all HER2-negative, and hormone receptor–positive/HER2-negative).”

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tnAcity Data Presented at SABCS Evaluates the Investigational Use of ABRAXANE® as First-Line Treatment of Metastatic Triple Negative Breast Cancer

Excerpt:

“Celgene Corporation (CELG) today announced that the results of its randomized phase II tnAcity trial of ABRAXANE® for injectable suspension (paclitaxel protein-bound particles for injectable suspension) (albumin-bound) will be presented at the 2016 San Antonio Breast Cancer Symposium (SABCS) December 6-10, 2016. The trial found that an investigational weekly combination regimen of ABRAXANE + carboplatin had significantly longer progression-free survival (PFS) (7.4 months) compared to weekly regimens of either ABRAXANE + gemcitabine (5.4 months) or of carboplatin + gemcitabine (6.0 months) as first-line treatment of patients with metastatic triple-negative breast cancer (mTNBC).”

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Neoadjuvant HER2+ Breast Cancer Options Need Refinement, Expert Says

Excerpt:

“While recent findings from the I-SPY 2 trial have shown potential with the combination of ado-trastuzumab emtansine (T-DM1; Kadcyla) and pertuzumab (Perjeta) for patients with HER2-positive breast cancer, the neoadjuvant space still has a lot of work ahead, according to Lisa A. Carey, MD.

“Results presented at the 2016 AACR Annual Meeting1 showed that, out of the 249 patients enrolled on the I-SPY 2 study, 54% of those who received T-DM1/pertuzumab experienced a pathological complete response (pCR) rate compared with 22% of those who received the combination of paclitaxel (Abraxane) plus trastuzumab (Herceptin).

“This suggests that T-DM1 could increase overall survival (OS) in this patient population, but Carey adds more research with the regimen needs to be conducted.”

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​​A Presurgery Combination Therapy May Improve Outcomes for Women With HER2-positive Breast Cancer

Excerpt:

“Results from the I-SPY 2 TRIAL show that a neoadjuvant (presurgery) therapy combination of the antibody-drug conjugate trastuzumab emtansine (T-DM1; Kadcyla) and pertuzumab (Perjeta) was more beneficial than paclitaxel plus trastuzumab for women with HER2-positive invasive breast cancer, according to research presented here at the AACR Annual Meeting 2016, April 16-20.

“In this portion of the I-SPY2 TRIAL, the investigators tested if T-DM1 plus pertuzumab could bring a substantially greater proportion of patients to the primary endpoint of pathological complete response [pCR] compared with paclitaxel plus trastuzumab. They also examined whether this combination could meet that goal without the need for patients to receive paclitaxel. pCR is an outcome in which, following neoadjuvant therapy, no residual invasive cancer is detected in the breast tissue and lymph nodes removed during surgery.”

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Neratinib Plus Paclitaxel vs. Trastuzumab Plus Paclitaxel in Breast Cancer

Excerpt:

“While neratinib plus paclitaxel was not superior to trastuzumab plus paclitaxel as first-line treatment for ERBB2-positive metastatic breast cancer in terms of progression-free survival, the combination was associated with delayed onset and reduced frequency of central nervous system metastases, a finding that requires a larger study to confirm, according to an article published online by JAMA Oncology.

“Metastatic ERBB2-positive breast cancer has a characteristic spread with most patients developing liver metastases and about half having poor prognosis with central nervous system involvement.

“Ahmad Awada, M.D., of the Jules Bordet Institute, Brussels, and coauthors conducted a randomized clinical trial to examine progression-free survival in women with recurrent or metastatic ERBB2-positive breast cancer. They also examined secondary outcomes that included time to symptomatic or progressive central nervous system lesions and safety.”

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One-Two Punch of Palbociclib, Paclitaxel Shows Promise against Advanced Breast Cancer

“Combining the new breast cancer drug palbociclib with paclitaxel (Taxol) shrank tumors in nearly half of patient with estrogen-receptor (ER) positive breast cancer, according to new research from the Perelman School of Medicine at the University of Pennsylvania. The results will be presented Saturday at the 2015 San Antonio Breast Cancer Symposium. A second study provides new clues to how breast cancer develops resistance to the palbociclib, a common occurrence among many patients who take the drug.

” ‘Results of the first study found that palbociclib and paclitaxel can be safely combined on an alternating dosing schedule,’ said Angela DeMichele, MD, MSCE, the Alan and Jill Miller Associate Professor in Breast Cancer Excellence in Penn’s Abramson Cancer Center, and senior author on the study. ‘The high response rate we saw suggests this combination may hold benefits for patients over paclitaxel alone. Based on these results, a larger clinical trial to determine the benefits is warranted.’ “