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Episode 395: Pharmacology 101: Monoclonal Antibodies

The ONS Podcast

Release Date: 12/26/2025

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info_outline Episode 395: Pharmacology 101: Monoclonal Antibodies show art Episode 395: Pharmacology 101: Monoclonal Antibodies

The ONS Podcast

“They [monoclonal antibodies] are able to cause tumor cell death by binding to and blocking to necessary growth factor signaling pathways for tumor cell survival. That’s going to be dependent on the target of the antibody, but I’ll give an example of epidermal growth factor, or EGFR. This is overexpressed in several different kinds of cancers where activation of this growth factor increases the amount of proliferation and migration of cancer cells. So, if we bind to it and block to it, then that would help halt these pathways and stop cancer cell growth,” Carissa Ganihong, PharmD,...

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“They [monoclonal antibodies] are able to cause tumor cell death by binding to and blocking to necessary growth factor signaling pathways for tumor cell survival. That’s going to be dependent on the target of the antibody, but I’ll give an example of epidermal growth factor, or EGFR. This is overexpressed in several different kinds of cancers where activation of this growth factor increases the amount of proliferation and migration of cancer cells. So, if we bind to it and block to it, then that would help halt these pathways and stop cancer cell growth,” 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 nursing practice at ONS, during a conversation about monoclonal antibodies.

Music Credit: “Fireflies and Stardust” by Kevin MacLeod

Licensed under Creative Commons by Attribution 3.0 

Earn 0.75 contact hours of nursing continuing professional development (NCPD) (including 45 minutes of pharmacotherapeutic content) by listening to the full recording and completing an evaluation at courses.ons.org by December 26, 2026. The planners and faculty for this episode have no relevant financial relationships with ineligible companies to disclose. ONS is accredited as a provider of nursing continuing professional development by the American Nurses Credentialing Center’s Commission on Accreditation.

Learning outcome: Learners will report an increase in knowledge in the history of, the mechanism of action of, and the use of monoclonal antibodies in the treatment of cancer. 

Episode Notes 

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

“Prior to monoclonal antibodies, all we really had were these toxic chemotherapies or toxic radiation, so it was recognized how great it would be if we could have a treatment that was much more specific to the tumor cells and have agents that have less toxicities. These advancements in monoclonal antibody production began in the 1980s. ... Eventually, we had the first monoclonal antibody that was approved by the U.S. Food and Drug Administration (FDA) for an oncologic indication, rituximab.” TS 4:14

 “Nowadays, we do have treatments that are also considered tumor-agnostic. This is when a patient has a certain biomarker, then that treatment can be given and FDA approval was given, regardless what type of tumor the patient has. We typically see these kinds of tumor-agnostic therapies more so in patients who have recurrent or advanced diseases in solid tumors. One monoclonal antibody example that comes to mind is dostarlimab. That’s a checkpoint inhibitor that’s approved for patients who are deficient in mismatch repair mechanism.” TS 23:48

“Our immune system constantly has this surveillance system and it’s able to recognize foreign pathogens, abnormal cells, and even precancerous cells. And they’re able to eliminate them before they become cancerous. But on the flip side, one of the regulatory mechanisms that we have so our immune system doesn’t attack itself is the presence of checkpoints. When these checkpoints bind to their ligands, this can then act as an off switch so that, again, our immune system is not going to attack itself. But then the tumor cells can take advantage of this and actually use this mechanism to evade the immune system. So, when we’re giving a checkpoint inhibitor, now we’re removing that off switch. As a consequence, common adverse effects can include things like immune mediated adverse events. These most commonly affect the skin, gastrointestinal tract, and liver. Essentially, this can cause any ‘-itis’ you can think of.” TS 26:36

“Looking at strategies to prevent infusion reactions, one example is the use of premedication. If premedication is recommended, this typically includes any combination of antipyretics, which is typically acetaminophen. Antihistamine, which is typically an H1 antagonist like diphenhydramine. Although, there could be cases where we want to substitute this agent because maybe the patient has been tolerating therapy okay, and they’re having a lot of side effects. So, we might use a second-generation antihistamine in some cases. The premedication may be given with or without some kind of steroid, whether that’s methylprednisolone, hydrocortisone, or dexamethasone.” TS 29:53

“We tend to think of monoclonal antibody usage to be primary oncology, but that’s not really the case. The first monoclonal antibodies that were developed were not for oncologic indications, they were for transplant indication for cardiac indication. So, they’re really diversely utilized across all specialties and medicines. We have monoclonal antibodies for hyperlipidemia, for neurology, for rheumatology, so the uses are so very expansive across all specialties.” TS 41:01