Monday, October 3, 2011

MedImmune Inks Deal for Pfizer's Anticancer mAb Therapeutic..Melanoma .Jim Breitfeller

MedImmune inked an in-license agreement with Pfizer for tremelimumab, a mAb therapeutic for various types of cancer. Pfizer presented final toxicity results of a Phase I dose-escalation trial of tremelimumab in combination with gemcitabine in chemotherapy-naive patients with metastatic pancreatic cancer.

Under terms of the deal MedImmune will assume global development rights to tremelimumab. Pfizer retains rights to use the drug compound with specified types of combination therapies.

Pfizer previously signed over developments rights covering tremelimumab in melanoma to Debiopharm after the mAb failed in a Phase III melanoma trial. The interim analysis found that it would not offer any benefit over standard chemotherapy. Thus in April 2008, Pfizer was forced to halt the trial.

A full evaluation of the data revealed a biomarker that predicted patients who were more likely to respond, according to Pfizer. Debiopharm will be responsible for conducting a new Phase III study that leverages this marker to select patients with unresectable, stage IV melanoma. At the time of inking the deal with Debiopharm, Pfizer said it would retain all commercial rights.

Tremelimumab is a fully human mAb that binds to the protein CTLA-4, expressed on the surface of activated T lymphocytes. "Adding another immunotherapeutic approach to our oncology pipeline, one which may employ the immune system itself to fight cancer, exemplifies our continued commitment to embracing this new era of cancer care," says Bahija Jallal, Ph.D., MedImmune's evp, R&D.

MedImmune has seven clinical-stage mAb programs for cancer treatment. Phase I candidates bind to CEA and CD3, CD22, IGF, CD19, and Ang2. The Phase II candidate targets PDGFRα and is being tested in lung cancer and glioblastoma. The company believes that the platelet-derived growth factor receptor alpha (PDGFRα) pathway, with its potential role in regulating transformation as well as tumor microenvironment, progression, and metastasis, may be an important cancer target.

MEDI-575 is a fully human mAb to PDGFRα being tested in lung cancer. It has been shown to inhibit signaling from PDGFRα on cancer cells and supportive stroma. However, MEDI-575 reportedly does not inhibit PDGFRβ, the inhibition of which has been associated with significant clinical toxicities including extravascular fluid accumulation.

MEDI-575 is a fully human mAb to PDGFRα being evaluated as a treatment for glioblastoma multiforme. MEDI-575 has been shown to inhibit signaling from PDGFRα on cancer cells and supportive stroma but not PDGFRβ, MedImmune says


Bristol Myer Squibb will now be looking in the rearview mirror and seeing MedImmune in it. Down the road we may see the price of these anti-CTLA-4 antibodies go down.


Also MedImmune has an US Patent Application 20100028330 - METHODS OF UPMODULATING ADAPTIVE IMMUNE RESPONSE USING ANTI-PD1 ANTIBODIES.

This is becomming Very Intersesting!!!

A race for the CURE!!!!!




It is good to see some Competition.



“It is not the strongest of the species that survives, nor the most intelligent, but the one most responsive to change.”

~Charles Darwin~

Take Care,

Jimmy B

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Greetings to One and All

This Blog is dedicated My Brother Kenny B. who passed away in the late 1970's with Cancer before the Internet.

It was he, who showed me How to live and give back. He was wise beyond his years.


Kenny B




Jimmy and Dee

Carepage: Jimmybreitfeller
Jimmy Breitfeller


My Profile as of 2009

My photo
Last July (2005)I was riding my bicycle to work at the Eastman Kodak Research Labs about 3 miles from home. I was wearing a knapsack to carry my things to and from the labs. I started noticing an ache on my back. So I decide to go to the dermatologist. To make the long story short, it was cancer. I knew from my research that I would be needing adjuvant therapy. So I started communicating with Sloan Kettering, University of Pittsburgh Cancer Center, and a couple of others including the Wilmot Cancer Center at Strong. I realized that by telling my story, I might help someone else out there in a similar situation. So to all who are linked by diagnosis or by relation to someone with melanoma, I wish you well. Stay positive, read as much as you can (information helps to eliminate the fear associated with the unknown), and live for today, as no one can predict what tomorrow may bring. Jimmy B. posted 12/15/08

Disclaimer

The information contained within this Blog is not meant to replace the examination or advice of your Oncologist or Medical Team. The educational material that is covered here or Linked to, does not cover every detail of each disorder discussed.

Only your physician/Oncologist can make medical decisions and treatment plans that are appropriate for you. But, An Educated Consumer is a Smart consumer.

As Dr. Casey Culberson Said:

"The BEST melanoma patient is an ACTIVE PARTICIPANT in his or her treatment
(not a PASSIVE RECIPIENT)"

Melanoma and the “Magic Bullet” (Monoclonal Antibodies)

Just to let you know I posted the first draft of the Melanoma and the “Magic Bullet” (Monoclonal Antibodies). on Melanoma Missionary In the Shared File Section. you can download it for 19.95 (Only kidding) it is Free for the taking.


It is 33 pages long and may help you in your quest for the Yellow Brick Broad. Just to let you know it is only the first draft. Revisions are sure to come. I wanted to get it to the people that need it the most, the Melanoma Patients.

Preview:

So, where does Interluekin-2 (IL-2) come into play? According to Byung-Scok et al and recent reports, IL-2 is not needed for developmental CD4+ CD25+ Treg cells in the thymus but does play an important role in the maintenance and function in the peripheral.18 Peripheral is defines as secondary system outside the bone marrow and thymus. It entails the site of antigen, immune system interaction. IL-2 is required for the peripheral generation of Tregs based Abbas’s and colleagues research.19

IL-2 prevents the spontaneous apoptosis of the CD4+ CD25+ Treg cells. It has been reported that patients with multiple advance-stage tumors have elevated levels of Tregs within the tumor microenviroment.20 Interluekin-2 is the survival factor for CD4+ CD25+ Treg cells.21 If the addition of IL-2 is on or before the maximum propagation of the CD4+ T cells, the Tregs population can increase 5-fold in a 96 hour period based on certain growth mediums.

By controlling the addition of the endogenous IL-2, one has a knob to turn and can lead to the control of the expansion of the Tregs. When you combined this control with the anti-CTLA-4 blockage, you can shift the balance of the immune response.

Now here is the catch. The maintenance and function of the CD8+ T-cells require CD4+ cells which secrete IL-2. So we don’t want to deplete the CD4+ cells, we want to control the expansion of the Tregs which are a subset of the CD4+ cells. It has been postulated by some researchers that the Anti-CTLA-4 blockage also suppresses the Treg function in a different mechanism. By using IL-2 as the rate limiting factor, we can suppress the CD4+ CD25+ Treg cell expansion by controlling the concentration and timing of the Inerluekin-2 at the tumor microenvironment.


The Interluekin-2 plays another role in this Melanoma Maze. In a study by Janas et al, Il-2 increases the expressions of the perforin and granzyme A, B and C genes in the CD8+ T-cells. This increase expression causes the CD8+ T-cells to mature into Cytoxic T Lymphocytes (CTLs). The exogenous IL-2 is required for the granzyme proteins. As stated previously, CTLs have cytoplasmic granules that contain the proteins perforin and granzymes. A dozen or more perforin molecules insert themselves into the plasma membrane of target cells forming a pore that enables granzymes to enter the cell. Once in the tumor cell, these enzymes are able to breakup (lyse) the cell and destroy it. This is the beginning of the end for the cancer cells. The tumors begin to shrink and the rest is history,

“

On the other hand, prolong therapy with Il-2 can result in causing apoptotic death of the tumor- specific CD8+ T-cells.23

Clearly in a clinical setting, timing, dose, and exposure to these drugs play a major roll in the immunotherapy, and can have dramatic effects on the outcome.

All it takes is that one magic bullet to start the immune reaction..

https://app.box.com/shared/kjgr6dkztj

Melanoma And The Magic Bullet (Monoclonal Antibodies)

Public Service Announcement

A call for Melanoma Patients by Dr. Steven A Rosenberg

"We continue to see a high rate of clinical responses in our cell transfer immunotherapy treatments for patients with metastatic melanoma", Dr. Rosenberg said.

"We are actively seeking patients for these trials and any note of that on a patient-directed web site would be appreciated."

If you would like to apply for his trials, here is the website and information.

Dr. Rosenberg's information


Dr. Rosenberg's Clinical Trials


For the Warriors




The Melanoma Research Alliance has partnered with Bruce Springsteen, the E Street Band, and the Federici family to alleviate suffering and death from melanoma. Please view Bruce Springsteen’s public service announcement inspired by Danny Federici. Danny was the E Street Band’s organist and keyboard player. He died on April 17, 2008 at Memorial Sloan-Kettering Cancer Center in New York City after a three year battle with melanoma.


http://www.melanomaresearchalliance.org/news/PSA/

Source Fastcures blog



Join the Relay for Life!!!

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Dear Family and Friends,

I’ve decided to take a stand and fight back against cancer by participating in the American Cancer Society Relay For Life® event right here in my community! Please support me in this important cause by making a secure, tax-deductible donation online using the link below.

To donate on line now, click here to visit my personal page.
Jimmy B AKA Melanoma_Missionary

Relay For Life® is a life-changing event that brings together more than 3.5 million people worldwide to:

CELEBRATE the lives of those who have battled cancer. The strength of survivors inspires others to continue to fight.

REMEMBER loved ones lost to the disease. At Relay, people who have walked alongside people battling cancer can grieve and find healing.

FIGHT BACK. We Relay because we have been touched by cancer and desperately want to put an end to the disease.

Whatever you can give will help - it all adds up! I greatly appreciate your support and will keep you posted on my progress.

Keep the Fire Burning!!!

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Sincerely,

Jimmy Breitfeller
Turn off Music before you "Click to Play"
Signs of Melanoma Carcinoma Skin Cancer

How Skin Cancer Develops by "About.com : Dermatology"

Call for Patients with Unresectable Liver Metastases Due to Melanoma



Delcath Systems Granted Orphan-Drug Designations for Cutaneous and Ocular Melanoma


Delcath is actively enrolling patients in a Phase III clinical trial testing its proprietary drug delivery system, known as Percutaneous Hepatic Perfusion (“PHP”), with melphalan for the treatment of ocular and cutaneous melanoma metastatic to the liver.

This NCI-led trial is enrolling patients at leading cancer centers throughout the United States. Commenting on these orphan-drug designations, Richard L. Taney, President and CEO of Delcath, stated, “These favorable designations are important steps in our efforts to secure Delcath’s commercial position upon conclusion of our pivotal Phase III trial for metastatic melanoma. We remain steadfast in our commitment to become the leader in the regional treatment of liver cancers and we continue to enroll patients in this study, and advance our technology and the promise that it offers to patients with these deadly forms of melanoma and other cancers of the liver, all with limited treatment options.”

Orphan drug designation, when granted by the FDA’s Office of Orphan Products Development, allows for up to seven years of market exclusivity upon FDA approval, as well as clinical study incentives, study design assistance, waivers of certain FDA user fees, and potential tax credits.


Current Trial Centers


Phase I Study of Hepatic Arterial Melphalan Infusion and Hepatic Venous Hemofiltration Using
Percutaneously Placed Catheters in Patients With Unresectable Hepatic Malignancies


James F. Pingpank, Jr., MD, FACS
Associate Professor of Surgery
Division of Surgical Oncology
Suite 406, UPMC Cancer Pavillion
5150 Centre Avenue
Pittsburgh, PA 15232
412-692-2852 (Office)
412-692-2520 (Fax)
PingpankJF@UPMC.edu


Blog Archive

Call For Melanoma Patients!!!!

Call For Melanoma Patients!!!!

Dr. Rosenberg Has a New Clinical Trial.

Our latest treatment has a 72% objective response rate with 36% complete responses.

We are currently recruiting patients for our latest trial.

Is there some way to post this “Call for Patients” on the web site?

Steve Rosenberg

Dr. Rosenberg's Clinical Trials



(For a copy of the research paper.. see My Shared files)

The news headlines shown above for Melanoma / Skin Cancer are provided courtesy of Medical News Today.