Mustang Bio soars on its gene therapy data

NEJM reports ‘medical breakthrough’ in Mustang Bio cell and gene therapy

Mustang Bio (MBIO) announced that the New England Journal of Medicine has published data from St. Jude Children’s Research Hospital, the nation’s “leading hospital” for understanding, treating and curing childhood cancer and other life-threatening diseases.

Mustang Bio soars on its gene therapy data, Stockwinners

The data comes from a Phase 1/2 clinical trial of a lentiviral gene therapy for the treatment of newly diagnosed infants under two years old with XSCID, also referred to as SCID-X1 and commonly known as “bubble boy disease.”

Under a licensing agreement with St. Jude, Mustang will develop the lentiviral gene therapy for commercial use as MB-107.

The multi-center Phase 1/2 clinical trial is evaluating the safety and efficacy of a lentiviral vector to transfer a normal copy of the IL2RG gene to bone marrow stem cells in newly diagnosed infants under the age of two with XSCID, preceded by low exposure-targeted busulfan conditioning.

A total of 10 infants have received the therapy to date in this clinical trial. Among the data highlights, bone marrow harvest, busulfan conditioning and cell infusion were well tolerated.

In seven of the eight cases, normalization of naive T-cell and natural killer cell numbers occurred within three to four months after treatment, accompanied by vector marking in T, B, NK and myeloid cells and marrow progenitors.

All patients cleared previous infections and are growing normally. Seven of the eight infants treated have developed normal IgM levels to date.

Most patients were discharged from the hospital within one month.

Data Highlights:

  • Bone marrow harvest, busulfan conditioning and cell infusion were well tolerated.
  • In seven of the eight cases, normalization of CD3+, CD4+ and CD4+ naïve T-cell and natural killer (“NK”) cell numbers occurred within three to four months after treatment, accompanied by vector marking in T, B, NK and myeloid cells and marrow progenitors.
    • The eighth infant had insufficient T cells initially, but normalization of T cells occurred following an unconditioned boost of gene-corrected cells, and the patient is progressing favorably.
  • All patients cleared previous infections and are growing normally.
  • Seven of the eight infants treated have developed normal IgM levels to date.
    • Four of these seven infants have discontinued monthly infusions of intravenous immunoglobulin (IVIG) therapy to date.
    • Three of those four infants that discontinued monthly IVIG infusions have responded to vaccines to date.

MBIO closed at $2.66, it last traded at $8.91.

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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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Bristol-Myers comments on Celgene’s purchase

Bristol-Myers sees ‘meaningful financial benefits’ from Celgene transaction.

Bristol-Myers treatment for colorectal cancer approved, Stockwinners

Bristol Meyers Comments on Celgene purchase, Stockwinners

Bristol-Myers Squibb (BMY) said an updated its investor presentation about the Celgene (CELG) transaction.

The company said, “The Celgene transaction is the natural next step in Bristol-Myers Squibb’s proven strategy that has consistently delivered results for over a decade.

Through a disciplined approach to driving innovation, focusing on high-value opportunities and sourcing innovation externally to complement its internal portfolio and pipeline, Bristol-Myers Squibb has generated consistently strong growth and increased its dividend for 10 consecutive years.

The combination with Celgene will create a leading biopharma with increased scale, while maintaining the same agility and a focus on delivering for patients in core disease areas of high-unmet medical need.

The pipeline of the combined company provides significant near-, medium- and long-term opportunities for value creation. Bristol-Myers Squibb is acquiring Celgene’s robust and complementary pipeline at an attractive price.

In addition to six expected near-term product launches representing more than $15B in revenue potential, the combination will greatly increase Bristol-Myers Squibb’s Phase I and II assets, which will provide the next set of registrational opportunities in core therapeutic areas.

With an expanded set of scientific platforms and research capabilities, Bristol-Myers Squibb will be well positioned to discover and develop highly innovative medicines and accelerate these new options to patients through one of the highest-performing commercial organizations in the industry.

Bristol-Myers Squibb is well positioned for 2025 and beyond with continued leadership across Oncology and a diversified portfolio of assets.

The combined company will have a broad, balanced and earlier life-cycle marketed portfolio with a significantly higher number of opportunities across multiple diseases to drive the growth of Bristol-Myers Squibb in the second half of the decade. These opportunities will support financial strength for continued investment and innovation.

The Celgene transaction is expected to generate meaningful financial benefits for all stockholders.

With more than $45B of expected free cash flow generation over the first three full years post-closing, the combination will enable rapid debt reduction to de-lever the balance sheet and strengthen Bristol-Myers Squibb’s credit profile.

Bristol-Myers Squibb expects to realize run-rate cost synergies of approximately $2.5B by 2022 from the combination, and the combined company is expected to grow revenue and EPS every year through 2025.”

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Bristol-Myers treatment for colorectal cancer approved

Bristol-Myers’ Opdivo approved for MSI-H/dMMR metastatic colorectal cancer

Bristol-Myers treatment for colorectal cancer approved, Stockwinners
Bristol-Myers treatment for colorectal cancer approved, Stockwinners

Bristol-Myers (BMY) announced Opdivo – nivolumab – 3 mg/kg plus low-dose Yervoy – ipilimumab – 1 mg/kg injections for intravenous use received approval from the FDA for the treatment of adult and pediatric patients 12 years and older with microsatellite instability high or mismatch repair deficient metastatic colorectal cancer that has progressed following treatment with a fluoropyrimidine, oxaliplatin and irinotecan.

Approval for this indication has been granted under accelerated approval.

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

The application was granted Priority Review and Breakthrough Therapy Designation by the FDA.

Among the 82 patients who received prior treatment with a fluoropyrimidine, oxaliplatin and irinotecan, 46% responded to treatment with Opdivo + Yervoy.

The percentage of these patients with a complete response was 3.7%, and the percentage of patients with a partial response was 43%.

Among these 38 responders, the median DOR was not reached; 89% of those patients had responses of six months or longer, and 21% had responses of 12 months or longer.

This trial is ongoing. Among all enrolled patients, 49% responded to treatment with Opdivo + Yervoy; 4.2% experienced a complete response, while 45% experienced a partial response.

Opdivo was discontinued in 13% of patients and delayed in 45% of patients due to an adverse reaction.

Serious adverse reactions occurred in 47% of patients.

The Opdivo + Yervoy combination is also approved in two other tumor types, advanced renal cell carcinoma and unresectable or metastatic melanoma.

Continued approval for these accelerated approval indications may be contingent upon verification and description of clinical benefit in the confirmatory trials.

BMY closed at $56.18.


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