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Episode 406: Drug Resistance Biomarkers and Their Impact on Cancer Treatment Choices

Release Date: 03/13/2026

Episode 424: Radiation Site-Specific Side Effects: Cancers of the Pelvis

The ONS Podcast

“Think about what organs lie in the radiation field, and anything that lies in that radiation field is likely going to have some potential temporary—hopefully temporary—side effects. If you think about the pelvis, the things that live in there are the bladder, urethra, some bowel, rectum, reproductive organs, skin, some lymph nodes. And so, all of those things could potentially have associated side effects,” ONS member Kayla Kafka-Peterson, BSN, RN, ROCN™, nurse navigator and leader in the brachytherapy and peri-anesthesia programs at UCLA Health, in Los Angeles, CA, told Lenise...

Episode 423: Pharmacology 101: Interaction Pathways

The ONS Podcast

“When we think of drug interactions, specifically, the National Cancer Institute actually defines this as a change in the way a drug acts in the body when taken with certain other drugs, herbals, or foods or when taken with certain medical conditions. Drug interactions may cause the drug to either be more or less effective or cause effects on the body that are not expected,” Carissa Ganihong, PharmD, BCOP, oncology and bone marrow transplantation clinical pharmacist at Hackensack University Medical Center in New Jersey, told Jaime Weimer, MSN, RN, AGCNS-BS, AOCNS®, manager of oncology...

Episode 422: An Overview of Chronic Lymphocytic Leukemia for Oncology Nurses

The ONS Podcast

“What I appreciate about our patients with chronic lymphocytic leukemia (CLL) or small lymphocytic leukemia is the consideration that they receive a cancer diagnosis, and the best thing for them to do is actually nothing. There is a large population of patients that we don’t recommend any type of treatment. We recommend that they establish care with an oncologist and that they have a relationship with those care teams,” ONS member Caitilin Murphy, DNP, APRN, FNP-BC, AOCNP®, chief nurse practitioner at Dana-Farber Cancer Institute in Boston, MA, told Lenise Taylor, MN, RN, AOCNS®,...

Episode 421: Medical Trauma in Oncology

The ONS Podcast

“There are a huge array of medical dynamics that people endure, and when they leave a lasting impact, a word that we don’t use widely enough is the word ‘trauma.’ There’s an entire category of phenomena in the medical arena that are, in fact, traumatic. One way we know that these experiences are traumatic is that we know that huge portions of people who experience things like cancer do indeed develop problems like [post-traumatic stress disorder],” James C. Jackson, PsyD, research professor at Vanderbilt University Medical Center in Nashville, TN, told Jaime Weimer, MSN, RN,...

Episode 420: Long-Term Myelodysplastic Syndrome Considerations for Oncology Nurses

The ONS Podcast

“We typically think of the disease progressing for our higher-risk patients because many of them already start with increased blasts or a lot of dysplasia. And they have these chromosomal variants that make them prone to evolving into acute myeloid leukemia (AML). With them, we can anticipate that they are going to progress to AML. And that’s what we’re trying to prevent. It’s kind of like a biologic evolution and not a switch,” ONS member Sara Tinsley-Vance, PhD, APRN, AOCN®, nurse practitioner and quality-of-life researcher at Moffitt Cancer Center in Tampa, FL, told Lenise...

Episode 419: Pharmacology 101: Immunomodulators

The ONS Podcast

“Until immunomodulators, patients [with myeloma] did not have a great overall survival rate. But when we introduced lenalidomide, we started seeing our patients have life expectancies between five and seven years—which was unheard of prior to these immunomodulators going forward. I think it’s promising and allows patients to have quality of life versus therapy of life,” ONS member Daniel Verina, DNP, RN, ACNP-BC, nurse practitioner for the multiple myeloma program at Mount Sinai Medical Center in New York, NY, told Lenise Taylor, MN, RN, AOCNS®, TCTCN™, oncology clinical specialist...

Episode 418: Radiation Site-Specific Side Effects: Colorectal Cancer

The ONS Podcast

“Radiation therapy is often extremely well tolerated in colorectal cancer. Technology has really changed things. But location of the tumor can affect side effects, such as radiation dermatitis. If a patient has a low-lying tumor, if it’s less than six centimeters from the anal verge, the patient is likely to have some skin reaction. It’s good to be proactive if that’s the case,” ONS member Lorraine Drapek, DNP, FNP-BC, AOCNP®, nurse practitioner in the Department of Radiation Oncology at Massachusetts General Hospital in Boston, told Jaime Weimer, MSN, RN, AGCNS-BS, AOCNS®,...

Episode 417: Pharmacology 101: Oncolytic Viral Therapy

The ONS Podcast

“There are a lot of specifics that nurses need to keep in mind as they are administering this herpes simplex modified virus to patients because accidental exposure is of concern both to the patient, to their family members, as well as to healthcare workers. I always recommend nurses wear personal protective equipment, such as a gown, safety glasses, gloves, and/or a face shield,” Heidi Finnes, PharmD, RPh, BCOP, director of clinical ambulatory practice at Mayo Clinic and assistant professor of pharmacy at Mayo Clinic Alix School of Medicine in Rochester, MN, told Jaime...

Episode 416: Cancer Treatments for Noncancer Indications: Radiation

The ONS Podcast

“When you have benign conditions, we’re actually treating 3 gray, so a significant difference [versus doses of 60 gray for brain cancer]. Typically, when you treat at a high dose, the goal is to destroy tissue, like cancer tissue or cancer cells. But when we give a low dose, the goal is actually to modulate inflammation. And what it does is it slows down those inflammatory cells or those cells that release the chemicals that cause pain and inflammation,” Amanda Meyer, DNP, APRN, CNP, family nurse practitioner in the Department of Radiation Oncology at the Mayo Clinic in Rochester, MN,...

Episode 415: Myelodysplastic Syndrome Treatment Considerations for Oncology Nurses

The ONS Podcast

“We want to make sure that we discuss the details of the treatment and what treatments there are, whether it’s an oral drug, whether it’s a subcutaneous injection or an IV injection, [the patient’s] potential for responding, whether this treatment is curative or supportive, and what the number of visits are. All of those different pieces of information that go into the decision-making process are really important,” ONS member Sara Tinsley-Vance, PhD, APRN, AOCN®, nurse practitioner and quality-of-life researcher at Moffitt Cancer Center in Tampa, FL, told Lenise Taylor, MN, RN,...

More Episodes

“Our goal of precision oncology has been to shift to tailored therapies that can help to improve treatment efficacy and ultimately improve patient outcomes. Resistance biomarker testing can help the care team to detect these genomic changes that the tumor may have acquired during therapy that makes the cells resistant to therapy. This information can be extremely helpful when we’re talking about making choices about second-line or subsequent-line therapy,” ONS member Danielle Fournier, DNP, APRN, AGPCNP-BC, AOCNP^®, advanced practice RN at the University of Texas MD Anderson Cancer Center in Houston, told Jaime Weimer, MSN, RN, AGCNS-BS, AOCNS^®, manager of oncology nursing practice at ONS, during a conversation about drug resistance biomarker testing.

This podcast episode is sponsored by AstraZeneca. ONS is solely responsible for the criteria, objectives, content, quality, and scientific integrity of its programs and publications.

Music Credit: “Fireflies and Stardust” by Kevin MacLeod

Licensed under Creative Commons by Attribution 3.0

Episode Notes

This episode is not eligible for NCPD credit.
ONS Podcast™ episodes:

ONS Voice articles:

ONS Biomarker Database
Clinical Journal of Oncology Nursing article: Tumor-Agnostic Therapies Reshaping Cancer Care
ONS book: Understanding Genomic and Hereditary Cancer Risk: A Handbook for Oncology Nurses
ONS course: Genomic Foundations for Precision Oncology
ONS Genomics and Precision Oncology Learning Library
American Cancer Society Cancer Action Network:

Find out which states are currently discussing biomarker testing bills and how you can advocate for them through ONS.

To discuss the information in this episode with other oncology nurses, visit the ONS Communities.

To find resources for creating an ONS Podcast club in your chapter or nursing community, visit the ONS Podcast Library.

To provide feedback or otherwise reach ONS about the podcast, email pubONSVoice@ons.org.

Highlights From This Episode

“We know that biomarkers are playing an ever more important role in cancer care, and really, their use can range anywhere from helping us to confirm a given diagnosis, understand a patient’s cancer susceptibility or risk, evaluate prognosis, as well as personalize treatment recommendations. … But in some cases, though, biomarkers can also help us to avoid therapies that are not likely to work. We also call these drug resistance biomarkers. These are those biomarkers that signify that a tumor is unlikely to respond to a given therapy.” TS 1:50

“Resistance to cancer therapies is one of the most common issues that arises during cancer treatment. Because the populations of cancer cells within a tumor can be very diverse, when a given drug kills the cells that are sensitive to that therapy, it can also eventually leave behind resistant tumor cells, which can grow and multiply over time. So this can ultimately lead to a point where the treatment that was initially effective is no longer able to control the disease.” TS 4:33

“While costs have come down, there can still be a cost associated with biomarker testing, and in some cases, this can be considered a barrier to care. What patients pay out of pocket can vary widely depending on their insurance coverage. So we have some data that was published from the American Cancer Society Cancer Action Network, and this was published a few years ago in 2023, which showed the average allowed unit cost to insurers per biomarker test ranged anywhere from about $79 for patients who were on Medicaid to about $224 for large-group, self-insured patients.” TS 10:03

“There’s research underway that’s looking not only at genomic changes—so DNA changes that impact drug resistance—but how other substances such as RNA and proteins within the cell can also contribute to drug resistance. And this kind of falls into not just genomics but multiomics field. I have no doubt whatsoever that the use of artificial intelligence and machine learning is likely going to play a large role in drug resistance research. And really, these tools can help researchers to analyze complex data sets, identify novel resistance biomarkers, predict resistance patterns, as well as help to develop treatments that may overcome some of those resistance mechanisms.” TS 17:00

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