RhAPPcast

In Part 3 of the Across the Rheum podcast series, Dr. Sergio Schwartzman concludes the three-part discussion on the IL-23 paradigm in psoriatic arthritis (PsA) with a deep dive into clinical utility, treatment positioning, and real-world decision-making. Building on prior episodes that covered immunologic mechanisms and comparative trial data, this final installment focuses on how IL-23 inhibitors...

Hypophosphatasia (HPP) is a rare genetic bone disorder that is often overlooked in adults, leading to years of misdiagnosis and ineffective treatment. In this episode of RhAPPcast, host Amanda Mixon, PA-C is joined by nurse practitioner Jeremy Morgan to explore how HPP presents in adulthood and why it is frequently missed in rheumatology practice. The discussion reviews common musculoskeletal feat...

Delayed diagnosis in psoriatic arthritis (PsA), spondyloarthritis (SpA), and inflammatory bowel disease (IBD) can lead to irreversible damage and prolonged patient suffering. In this FAQ episode, host Audrey Gibson, PA-C reviews validated screening tools that help clinicians identify these conditions earlier and determine when referral to rheumatology or gastroenterology is warranted. The discussi...

In this FAQ video, Audrey Gibson, PA-C, reviews validated screening tools used to identify psoriatic arthritis, spondyloarthritis, and inflammatory bowel disease and when to refer patients to rheumatology or gastroenterology. The discussion covers practical tools such as PEST for PsA, ASAS referral criteria for SpA, and red flag–based screening for IBD, including CalProQuest. Designed for primary...

In Part 2 of the Across the Rheum podcast series, host Dr. Sergio Schwartzman continues the three-part discussion on the IL-23 paradigm in psoriatic arthritis (PsA). This episode takes a focused, clinical look at the currently available IL-23 inhibitors, reviewing their mechanisms of action, structural differences, dosing strategies, and FDA-approved indications across psoriasis, psoriatic arthrit...

In this Journal Club episode, Holly Reid, APN, CPNP, MS reviews the 2023 Osteoporosis International article, Hypophosphatasia Diagnosis: Current State of the Art and Proposed Diagnostic Criteria for Children and Adults, which offers long-needed clarity around diagnosing hypophosphatasia (HPP). HPP is a rare inherited metabolic bone disease that is frequently misdiagnosed or significantly delayed i...

Brandon Ko, APRN, DNP, a pediatric rheumatology nurse practitioner at the University of New Mexico and Pediatric Chair for RhAPP, reviews the potential role of guselkumab in juvenile psoriatic arthritis. This medication review explores the current FDA submission for pediatric use, the clinical rationale behind extrapolating adult psoriatic arthritis data, and supporting safety and efficacy finding...

Welcome to the premiere of Across the Rheum, the official podcast of Rheum Connect, where cutting-edge science meets real-world clinical insight in rheumatology. Hosted by renowned rheumatologist Dr. Sergio Schwartzman, this new educational podcast launches with a three-part series exploring The Interleukin-23 (IL-23) Paradigm in Psoriatic Arthritis. In Episode 1, the series sets the foundation wi...

In this episode of RhAPPcast, host Amanda Mixon, President of RhAPP, is joined by pediatric rheumatology specialist and RhAPP board member Brandon Ko to spotlight hypophosphatasia (HPP) in children—an underrecognized inherited metabolic bone disorder that is frequently missed in clinical practice. The conversation reviews perinatal, infantile, and childhood-onset HPP, highlights subtle early warni...

In this episode of RhAPPcast, host Amanda Mixon, President of RhAPP, is joined by rheumatology PA Audrey Gibson for an in-depth discussion on IL-23 inhibitors and what differentiates them in real-world rheumatology practice. The conversation reviews the IL-23/Th17 pathway, current approved IL-23 inhibitors for psoriatic arthritis, and key considerations around efficacy, safety, durability, and pat...

In this FAQ, Brandon Ko, APRN, a pediatric rheumatology nurse practitioner and RhAPP Pediatric Chair, provides a practical overview of hypophosphatasia (HPP) across the lifespan and explains why this rare inherited metabolic bone disorder is often missed in clinical practice. The discussion reviews pediatric and adult presentations of HPP, including subtle skeletal symptoms, premature tooth loss w...

In this journal club review, clinical pharmacist Danielle Gatti Palumbo, breaks down a March 2025 study examining how guselkumab’s unique Fc-domain interactions with CD64-positive, IL-23–producing myeloid cells enhance its potency in neutralizing IL-23 signaling. The discussion explores the immunologic role of IL-23 in inflammatory diseases such as psoriasis, psoriatic arthritis, and inflammatory...

In this focused educational video, Heather Mambretti, PA-C, a rheumatology APP with over 12 years of experience and a faculty and board member for RhAPP, explains how hypophosphatasia (HPP) is diagnosed and highlights the key laboratory markers clinicians should not overlook. The discussion reviews the hallmark finding of persistently low serum alkaline phosphatase (ALP), additional supportive lab...

In this video, Lindsay Tom, PA-C, takes a focused look at the emerging connection between CD64 and IL-23 across inflamed joint, skin, and gut tissue. Drawing from real-world immunology and disease-state research, she explores why this pathway matters in immune-mediated inflammatory conditions such as psoriasis, psoriatic arthritis, and inflammatory bowel disease. The discussion highlights how CD64...

In this educational rheumatology video, physician assistant Lindsay Tom, PA-C, from the Northern Virginia Center for Arthritis, provides a clear and clinically relevant overview of CD64, also known as FC gamma receptor I, and its role in immune system function. The discussion explores how CD64 is expressed on myeloid lineage cells such as monocytes, macrophages, and dendritic cells, and how it con...

In this short video, pediatric rheumatology advanced practice providers Brandon Ko, APRN, DNP, C-PNP, and Brandi Goble, PNP, share their personal journeys into pediatric rheumatology and discuss the critical role APPs play in expanding access to care—especially in rural and underserved communities. They highlight the challenges of entering a highly specialized field with limited formal training, t...

In this video, Audrey Gibson, PA-C, a rheumatology physician assistant with nearly two decades of clinical experience, breaks down the unique dual mechanism of action of guselkumab and its role in targeting IL-23–driven inflammation. The discussion explores how this fully human monoclonal antibody selectively binds the IL-23 p19 subunit to inhibit downstream inflammatory signaling, while also enga...

In this FAQ, William Saalfeld, NP, breaks down why the modified van der Heijde–Sharp (mvdH-S) score remains the most widely used radiographic method in psoriatic arthritis (PsA) clinical trials. He highlights how the score delivers the strongest combination of reliability, sensitivity to change, and validation, making it ideal for detecting small but meaningful structural progression over typical...

Discover how the APEX trial raised the bar in understanding structural damage risk in psoriatic arthritis. In this quick FAQ video module, William Saalfeld, NP, breaks down why APEX was designed differently from DISCOVER-2, what made its patient population unique, and how these changes help us better evaluate progression and treatment impact. If you want a clearer, faster way to understand the sci...

In this final episode of our RhAPP, MAPP, GHAPP, and SDPA crosscast series, expert APPs from dermatology, gastroenterology, rheumatology, and obesity medicine break down the most important conversation of all—how to talk to patients about obesity and immune-mediated inflammatory diseases (IMIDs). This discussion focuses on real-world communication strategies, reducing stigma, motivational intervie...

In this cross-specialty episode of our RhAPP, GHAPP, MAPP and SDPA collaborative series, leading APPs from dermatology, gastroenterology, rheumatology, and metabolic medicine break down real-world strategies to improve outcomes for patients living with both obesity and immune-mediated inflammatory diseases (IMIDs). Building on earlier discussions about epidemiology and pathophysiology, this conver...

In this episode of our crosscast series shared across RhAPPcast, GHAPPcast, and Dermcast, we explore the hidden costs of obesity in immune-mediated inflammatory diseases (IMIDs) and how excess adiposity drives poorer outcomes, reduced treatment response, and increased healthcare burden. Hosted by Amanda Mixon, PA-C, president of RhAPP, this discussion brings together expert APPs from rheumatology,...

Welcome to the first episode in our special cross-platform podcast collaboration on IMIDs and Obesity, shared across RhAPPcast, GHAPPcast, and Dermcast—the official podcasts of RhAPP, GHAPP, and SDPA. Hosted by Amanda Mixon, PA-C, President of RhAPP, this conversation titled “Obesity and IMIDs: Unpacking the Epidemic and Its Far-Reaching Impacts” explores one of the most under recognized yet clini...

Join host Amanda Mixon, President of RhAPP, for a special episode of RhAPPcast, recorded live at the 6th Annual RhAPP Conference. In this conversation, Amanda is joined by Jessica Glennie, CNP, from the Cleveland Clinic, to explore the complex intersection of rheumatology and pulmonology, focusing on Interstitial Lung Disease (ILD) and Pulmonary Hypertension in ILD (PH-ILD). Together, they unpack...

Join host Amanda Mixon, PA-C, live from the 6th Annual RhAPP National Conference in Denver, as she sits down with Naomi Amudala, CRNP, from Penn Medicine, to break down one of rheumatology’s most complex and life-threatening conditions: ANCA-associated vasculitis. In this insightful RhAPPcast episode, Amanda and Naomi explore the spectrum of AAV—including GPA, MPA, and EGPA—while unpacking early d...