Karyopharm Therapeutics shares jump on FDA decision

Karyopharm announces FDA approval of XPOVIO-dexamethasone combination for multiple myeloma

Karyopharm Therapeutics shares soar on FDA approval, Stockwinners

Karyopharm Therapeutics Inc. (KPTI) announced that the U.S. Food and Drug Administration has approved oral XPOVIO, a nuclear export inhibitor, in combination with dexamethasone for the treatment of adult patients with relapsed or refractory multiple myeloma who have received at least four prior therapies and whose disease is refractory to at least two proteasome inhibitors, at least two immunomodulatory agents, and an anti-CD38 monoclonal antibody.

This indication is approved under accelerated approval based on response rate.

Continued approval for this indication may be contingent upon verification and description of clinical benefit in a confirmatory trial.

XPOVIO to become commercially available in the U.S. on or before July 10, 2019, Stockwinners

The ongoing, randomized Phase 3 BOSTON study evaluating selinexor in combination with Velcade and low-dose dexamethasone will serve as the confirmatory trial.

The FDA’s Accelerated Approval Program was developed to allow for expedited approval of drugs that treat serious conditions and that fill an unmet medical need.

Karyopharm expects XPOVIO to become commercially available in the U.S. on or before July 10, 2019.

A Marketing Authorization Application for selinexor is also currently under review by the European Medicines Agency.

The FDA advises health care professionals to tell females of reproductive age and males with a female partner of reproductive potential to use effective contraception during treatment with Xpovio.

Women who are pregnant or breastfeeding should not take Xpovio because it may cause harm to a developing fetus or newborn baby. Xpovio must be dispensed with a patient Medication Guide that describes important information about the drug’s uses and risks.

The FDA granted this application Fast Track designation. Xpovio also received Orphan Drug designation, which provides incentives to assist and encourage the development of drugs for rare diseases.

Executive Changes

In a regulatory filing, Karyopharm disclosed that on July 2, Karyopharm Therapeutics promoted Perry Monaco to Senior Vice President, Sales responsible for the company’s sales function under the direction of Michael Kauffman, Chief Executive Officer of the company.

On July 2, following the buildout of the company’s commercial organization and development of the company’s product launch strategy, Anand Varadan resigned as Executive Vice President, Chief Commercial Officer of the company, effective July 5.

KPTI last traded at $8.15.

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Bio-Path Holdings presents positive pancreatic cancer data

Bio-Path Holdings presents BP1003 data at AACR

Bio-Path Holdings presents positive pancreatic cancer data, Stockwinners

Bio-Path Holdings (BPTH) announced that data from pre-clinical studies supporting the potential of BP1003, a liposome-incorporated STAT3 oligodeoxynucleotide inhibitor, for the treatment of pancreatic cancer, non-small cell lung cancer, or NSCLC, and acute myelogenous leukemia, or AML, were presented in a poster at the American Association for Cancer Research, or AACR.

The poster highlights four antisense oligo sequences directed against STAT3 mRNA identified by Bio-Path and manufactured using DNAbilize antisense RNAi nanoparticle technology.

Cell viability tests and western blots were conducted to determine the inhibitory effects of liposome-incorporated STAT3 antisense oligo on NSCLC and AML cells.

An ex vivo live tissue sensitivity assay was performed with a panel of 20 pancreatic ductal adenocarcinoma patient-derived xenografts to study the overall activity of BP1003 alone, and in combination with gemcitabine.

Using previously defined criteria, tissue slice viability inhibition greater than 30% and with a less than 0.05 value was considered to be a response.

For validation of ex vivo results, tumor bearing mice were administered BP1003 and gemcitabine twice a week for 28 days. Tumor volumes were monitored for up to 49 days.

The most potent liposome-incorporated STAT3 antisense sequence in decreasing NSCLC cell viability was selected as the drug candidate BP1003.

Further validation in AML cells demonstrated that BP1003 inhibited cell viability and STAT3 protein expression. In the ex vivo LTSA assay, BP1003 at a dose of 10 microM significantly inhibited the tissue slice viability in 9 out of 18 PDAC PDXs by more than 30%.

The combination of BP1003 and gemcitabine further enhanced ex vivo efficacy of BP1003 in a subset of PDXs.

In the in vivo study, a combination of BP1003 and gemcitabine caused tumor regression during the 28-day drug treatment period.

This anti-cancer activity was maintained for another 21 days, even when drug treatment had ceased.

Preclinical pancreatic cancer models demonstrated that BP1003 successfully penetrated the stroma into pancreatic tumors.

Finally, the results in pancreatic cancer showed that BP1003 inhibited tumor slice viability in nine of 18.

BPTH closed at $19.68, it last traded at $20.61.

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Advaxis jumps on its prostate cancer drug data

Advaxis says ADXS-PSA in combination with KEYTRUDA prolonged survival in mCRPC

Advaxis jumps on its prostate cancer drug data, Stockwinners

Advaxis (ADXS) announced updated data from the Phase 1/2 KEYNOTE-046 study in metastatic, castration-resistant prostate cancer.

Castrate-resistant prostate cancer refers to prostate cancer that keeps growing even when the amount of testosterone in the body is reduced to very low levels. Many early-stage prostate cancers need normal levels of testosterone to grow, but castrate-resistant prostate cancers do not. 

Androgens are required for normal growth and function of the prostate. Androgens are also necessary for prostate cancers to grow. Androgens promote the growth of both normal and cancerous prostate cells by binding to and activating the androgen receptor, a protein that is expressed in prostate cells Once activated, the androgen receptor stimulates the expression of specific genes that cause prostate cells to grow .

Early in their development, prostate cancers need relatively high levels of androgens to grow. Such prostate cancers are called castration sensitive, androgen dependent, or androgen sensitive because treatments that decrease androgen levels or block androgen activity can inhibit their growth.

This trial is being conducted in conjunction with Merck (MRK) and is evaluating ADXS-PSA, one of Advaxis’ Listeria monocytogenes-based immunotherapies, alone and in combination with KEYTRUDA, Merck’s anti-PD-1 therapy.

Findings will be highlighted in a poster discussion entitled “Effects of ADXS-PSA with or without Pembrolizumab on Survival and Antigen Spreading in Metastatic, Castration-Resistant Prostate Cancer Patients” at the American Association for Cancer Research Annual Meeting underway in Atlanta.

KEYNOTE-046 is an open-label, multicenter, dose-determining safety and tolerability Phase 1/2 trial of 50 heavily pretreated patients conducted in two parts, with a Phase 2 expansion cohort. The objective of the study is to evaluate ADXS-PSA alone and in combination with KEYTRUDA for primary endpoints that include safety, tolerability and dosing.

Secondary endpoints include anti-tumor activity and progression-free survival, and exploratory endpoints include associations between biomarkers of immunologic response with clinical outcomes.

Key findings from the combination arm of KEYNOTE-046 include the following: The majority of treatment-related adverse events consisted of transient and reversible Grade 1-2 chills/rigors, fever, hypotension, nausea and fatigue.

The combination of ADXS-PSA and pembrolizumab has been well-tolerated, to date, with no additive toxicity observed. Median overall survival was 21.1 months at data cutoff in this dataset of 37 patients.

Correlative immune analyses showed T-cell responses against PSA in 75% of subjects and antigen spreading in 85% of subjects. Broader immune stimulation, including B-cell activation, was observed in the combination arm than in the ADXS-PSA monotherapy arm.

ADXS closed at $5.91, it last traded at $8.15. MRK closed at $83.17.

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