Tag Archives: cancer treatment

The Role of Environmental Regulations in the Fight Against Cancer

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NYC NPR, May 10, 2021

Last month, President Biden announced he wanted to boost funding for research on cancer and other diseases. But experts say that the fight against cancer will be tough to win if there isn’t also a focus on preventing the disease by regulating carcinogens. The Environmental Protection Agency has historically been slow to act on known carcinogens and much more research is needed to find out exactly which toxins are making us sick.

Diana Zuckerman, president of the National Center for Health Research, joined The Takeaway to discuss what it would take to win the war on cancer.

To listen, click on the play button on https://www.wnycstudios.org/podcasts/takeaway/segments/role-environmental-regulations-fight-against-cancer

Conflicts Galore: Upcoming Accelerated Approval Cancer Panel May Be Tainted By Industry Relationships

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Sarah Karlin-Smith, Pink Sheet: April 21, 2021

Six members of the FDA Oncologic Drugs Advisory Committee received conflict of interest waivers to participate in the agency’s upcoming three-day meeting to review the accelerated approval of six checkpoint inhibitor indications after the three cancer immunotherapies at issue failed to confirm clinical benefit in post-market trials raising questions about whether industry influence may heavily factor in the committee’s decision making.

The high number of waivers could mean that a majority or close to a majority of the panelists will have conflicts based on the typical number of advisors on FDA panels. The agency used to be subject to waiver limits but the 2012 FDA Safety and Innovation Act removed these restrictions.

ODAC’s 27-29 April meeting, part of the agency’s broader industry-wide effort to evaluate accelerated approvals for oncology drugs, is unprecedented in the number of drugs and indications up for accelerated approval withdrawal. The committee will discuss two indications for Tecentriq (atezolizumab); three for Keytruda (pembrolizumab); and one for Opdivo (nivolumab).

[….]

Vinay Prasad, a hematologist-oncologist at the University of California San Francisco acknowledged that it may not always be easy to find unconflicted experts but, he said they do exist. He also argued that in this case you might be able to look at other professionals like internists who study research methods and FDA approvals, for example for panel members.

[….]

Diana Zuckerman, president of the National Center for Health Research said that while FDA needs some people with clinical expertise who understand the illness and issues with the treatment, it doesn’t need an entire panel of these people. She said that one way FDA can find more qualified experts is by looking at schools of public health where academics rarely get money from industry and they have expertise in understanding clinical trials as well as biostatics.

Even if the academic’s salary isn’t directly funded by their work with industry, there are multiple reasons to be concerned that work on industry trials with the same drugs creates conflicts.

“There’s research showing that researchers feel more positively about drugs that they’ve studied. That’s normal human behavior. You feel proprietary towards something that you’ve studied. You also have a relationship with the company,” said Adrian Fugh-Berman a professor Pharmacology and Physiology at Georgetown where she directs PharmedOut, a project that focuses on evidence-based prescribing and studying industry marketing practices.

The person may also be thinking about how their behavior on the committee may impact other research opportunities the university or they in particular have with the company, she explained.

“Are you going to get more research grants for the company if you kill their drug?” Fugh-Berman said.

[….]

Over the past 12 months ODAC has had two other committee meetings where four waivers were granted but that is far from typical. Most agency advisory committees don’t have any waivers or at most have one or two, per data from FDA from 2018 onward.

FDA is supposed to publish an annual report to Congress on advisory committees that include information on waivers but the latest report available online was from fiscal year 2016. FDA did respond to questions about whether more updated data exists and where it can be found.

​To read the entire article, see https://pink.pharmaintelligence.informa.com/PS144196/Conflicts-Galore-Upcoming-Accelerated-Approval-Cancer-Panel-Includes-Many-Industry-Relationships

Janet Woodcock revolutionized the way the FDA reviews cancer drugs, inspiring her supporters and raising concerns for detractors

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Nicholas Florko, STAT News: March 1, 2021

In 2000, the Food and Drug Administration approved just three cancer drugs. Last year, even with the agency laser-focused on the coronavirus pandemic, much of its staff teleworking, the agency still approved a record-breaking 17 different cancer therapies — more than in any other category. That’s the legacy of FDA drug center chief Janet Woodcock. Woodcock, a 36-year veteran of the agency, is infamous for pushing the FDA to loosen its standards for drugs for rare conditions like Duchenne muscular dystrophy. But Woodcock’s most lasting impact at the FDA is her transformation of the way the agency approaches cancer drug approvals….. Now the nation’s top cancer doctors are emerging as Woodcock’s most vocal backers in her campaign to become President Biden’s FDA commissioner.

Critics say Woodcock’s cancer crusade has come at a cost. With the speed has come an erosion of the agency’s high standards and an increasing willingness to greenlight drugs that haven’t actually been proven to extend a patient’s life. … Their complaint mostly revolves around Woodcock’s willingness to accept studies testing drugs based on so-called surrogate endpoints, measures like the shrinkage of a tumor, rather testing a drug based on how long it keeps a patient alive. ….It’s a view that even some former FDA officials hold; one described Woodcock as pushing “flexibility even at the expense of science.”

[.…]

“For many cancers there is an improvement in survival, the question is which drugs are responsible for that and which ones aren’t, that’s the big unknown and that’s what’s so frustrating,” said Diana Zuckerman, the president of the National Center for Health Research. The end result of this confusion, critics argue, is that doctors and patients are left guessing whether a drug is truly effective, or worth the money.

 [….]

Read the full article here.

NCHR’s Public Comments on FDA’s Proposed Inclusion of Older Adults in Cancer Clinical Trials

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May 4, 2020

National Center for Health Research’s Public Comments on FDA’s Proposed Inclusion of Older Adults in Cancer Clinical Trials Guidance for Industry

[FDA-2019-D-5572-0002]

We are writing to express our views on the FDA Draft Guidance on Older Adults in Cancer Clinical Trials. The National Center for Health Research (NCHR) is a nonprofit think tank that conducts, analyzes, and scrutinizes research, policies, and programs on a range of issues related to health and safety. We do not accept funding from companies that make products that are the subject of our work.

We have long urged the FDA to require older adults in clinical trials of drugs for the treatment of cancer and other diseases that are likely to be used by people over 65. When our Center’s president served on CMS’ Medicare Evidence Development & Coverage Advisory Committee (MEDCAC), she pointed out at every meeting that there were few if any patients over 65 who had been tested in clinical trials for the drugs and devices that were seeking to be covered by Medicare. As a result, it was impossible for the MEDCAC members to determine if the likely benefits outweighed the risks of any of those products, including cancer diagnostic tests and treatments.

We strongly support FDA’s efforts to improve the diversity of clinical trials and analyses of demographic subgroups, but have been disappointed that these efforts have not been enforced in a meaningful way. Subgroup analyses of safety and efficacy are essential for new drugs and devices so that patients and clinicians can make informed treatment decisions. New medical products should only be approved for populations for which there has been sufficient testing to determine that the benefits outweigh the risks. This is of particular importance for older adults in cancer trials. Moreover, if the FDA refused to approve cancer drugs for patients over 65 or over 70 when those age groups were not adequately studied, it would provide a substantial incentive for sponsors to be more vigilant about recruiting and studying patients in older age groups.

As stated in the guidance, it is not sufficient to only study the safety and efficacy of treatments among younger adults and assume that the results would be the same for older adults as well. We also strongly support the recommendation to evaluate smaller, discrete age groups (such as ages 65-74 and 75 and up), as well as the recommendation to collect additional safety measures for older adults, such as cognitive functioning. However, there are additional aspects of subgroup analysis that must be taken into consideration.

Subgroup analysis must determine the unique benefit to risk ratio for each subgroup, rather than determine whether the benefits of a treatment differ between younger and older patients. Older adults are more likely to have comorbidities that can affect how drugs are absorbed, metabolized, or eliminated, which may impact the safety and efficacy of a particular treatment. Therefore, there must be an assessment of the unique risks and benefits for older adults. It is not important to know that a medical product is more or less safe or effective for older patients compared to younger patients; what matters to older patients is whether the benefits outweigh the risks for patients in their age group.

In addition, it is not necessary that the proportion of older patients studied is consistent with the proportion of older patients with the particular type of cancer. What matters is that there be sufficient numbers of older adults so that subgroup analyses can be conducted to assess the benefits and risks of treatment for patients in several older age groups. Subgroup analyses are not meaningful if the numbers of older patients in the trials are small.

Since older adults are likely to be more frail and to have other serious comorbidities, it is imperative to determine the adverse effects and the efficacy of new drugs for older adults prior to FDA approval. All too frequently, post-market research, even if required, is delayed, follow-up is inadequate, or for other reasons the results are not as informative as had been expected.

The National Center for Health Research can be reached at info@center4research.org or at (202) 223-4000.