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Greenmyer, Jacob R.

https://orcid.org/0000-0001-6411-3248

Mayo Clinic

Mayo Clinic

Citations 28

Impact of electronic patient-reported outcome measure (ePROM)–triggered, collaborative care (CC)–based symptom intervention on depression and anxiety in young adults (YAs) with cancer.
Storandt, Michael H., Ruddy, Kathryn Jean, Pachman, Deirdre R. , Kour, Oudom, Grzegorczyk, Veronica , Kroenke, Kurt, Austin, Jessica, Mitchell, Sandra A., Smith, Ashley , Ehlers, Shawna L. , Chlan, Linda L., Cobran, Ewan K. , Greenmyer, Jacob R. , Augustin, Ryan Christian, Shi, Qian, Cheville, Andrea L., Storandt, Michael H. , Jin, Zhaohui , Ruddy, Kathryn J. , Kroenke, Kurt, Griffin, Joan M. , Austin, Jessica D. , Mitchell, Sandra A , Chlan, Linda L. , Allen‐Rhoades, Wendy , Shi, Qian , Cheville, Andrea L.

Journal of Clinical Oncology | May 27, 2026 | Volume: 44 | Issue: 16_suppl | Pages: 12007-12007

10.1200/jco.2026.44.16_suppl.12007 Get It

12007 Background: YAs with cancer, defined as those diagnosed prior to the age of 40, may experience greater symptom burden compared to those diagnosed at older ages. We evaluated the impact of an ePROM-triggered, CC-based, supportive care intervention on symptom burden in YAs with cancer. Methods: The Enhanced, Electronic Health Record-facilitated Cancer Symptom Control (E2C2) trial was a cluster-randomized, pragmatic trial (NCT03892967) that enrolled oncology patients seen at Mayo Clinic Rochester and within the Mayo Clinic Health System (sites in Minnesota and Wisconsin) between March 2019 and January 2023. Patients routinely reported the severity of six SPPADE symptoms (Sleep deficit, Pain, Physical function impairment, Anxiety, Depression, and Energy deficit/fatigue) on 11-point numerical rating scales. Symptom severity was classified as none to mild (0-3), moderate (4-6), or severe (7-10). Those with moderate or severe symptoms were offered symptom management education, while those with severe symptoms were also offered the option to work virtually with a symptom care manager. In this post hoc analysis, we examined the effects of the intervention on change in symptom scores among YAs and time to improvement to a mild/moderate level in those with at least one severe symptom. Results: Among 40,659 patients who responded to at least one survey, 2,598 were YAs and 38,061 were adults ≥ 40 years. Among YAs, 10.7%, 24.3%, and 65.1% were 18-24 years, 25-31 years, and 32-39 years, respectively. A greater proportion of YA patients were female (61.5% vs 57.0%), of a non-white race (12.4% vs 5.3%), living in an urban setting (65.7% vs 55.1%), single (36.4% vs 9.6%), on non-government insurance (78.1% vs 36.6%), employed (72.6% vs 37.4%), and had a Bachelor’s degree or greater (37.8% vs 28.3%, p < 0.001 for all). Fewer YA patients had metastatic disease compared to older patients (24.2% vs 35.2%, p < 0.001). Compared to a pre-intervention baseline, the mean change in symptom score for YA patients following the intervention demonstrated improvements in anxiety (-0.195) and depression (-0.168, p < 0.0001 for both), while physical function impairment worsened over the intervention period (0.101, p = 0.014). Compared to adults ≥ 40 years, YAs experienced greater intervention effects for management of depression ( p < 0.001), fatigue ( p = 0.01), pain ( p < 0.0001), and physical function impairment ( p < 0.0001). Among YAs with a severe symptom during the intervention period, median time to improvement to a mild/moderate level was longer for anxiety compared to those ≥ 40 years (3.5 vs 2.7 months, p = 0.009). Conclusions: Routine ePROM surveillance, coupled with CC-based symptom management, led to improvements in anxiety and depression among YAs with cancer, although, time to improvement was longer for anxiety compared to adults ≥ 40 years.
An Overview of Cannabinoid Interactions With Common Pediatric Antineoplastic Agents
Zaman, Shatila, Schatz, Mollie, Kuhn, Alexis , O’Keefe, Madeleine, Greenmyer, Jacob R. , Smith, Melissa K, Martin, Catherine E. , Kuhn, Alexis K , O'Keefe, Madeleine B, DeFino, Catherine E.

Pediatric Blood & Cancer | April 30, 2026 | Volume: 73 | Issue: 7 | Pages: No page available

10.1002/1545-5017.70336 Get It

ABSTRACT As interest in the use of cannabinoids for supportive care in pediatric cancers grows, there are emerging concerns about potential interactions with antineoplastic agents. This review provides an overview of potential drug–drug interactions between cannabinoids and 25 antineoplastic agents commonly used in pediatric hematology/oncology. Antineoplastic agents were stratified into low, medium, or high interaction risk based on the potential impact of cannabinoids on metabolic and/or pharmacodynamic pathways. The antineoplastic agents identified as high risk for interactions with cannabinoids included cyclophosphamide, doxorubicin, etoposide, ifosfamide, irinotecan, vinblastine, and vincristine. Key mechanisms of interaction include inhibition of cytochrome P450 enzymes and UDP‐glucuronosyltransferases and modulation of drug transporters such as P‐glycoprotein and breast cancer resistance protein. There is emerging evidence of a synergistic effect between cannabinoids and antineoplastic agents such as temozolomide, vinblastine, vinorelbine, and irinotecan. Pediatric patients exhibit developmental differences in drug metabolism and transporter expression, yet most pharmacokinetic data on cannabinoids are extrapolated from adult studies. There is a lack of pediatric‐specific safety, efficacy, and dosing data that underscores the need for age‐appropriate studies to ensure safe and effective integration of cannabinoids in pediatric cancer care.
Comparative Analysis of Familial Versus Infectious Neonatal Hemophagocytic Lymphohistiocytosis
Greenmyer, Jacob R. , Anderson, Megan L., Cameron, Charles S., Kranz, Lincoln A., Hahn, Wyatt S., Kohorst, Mira A. , Martin, Catherine, Galardy, Paul J. , Hentz, R. C., Cameron, Charles S., Thompson, Whitney S. , Ferdjallah, Asmaa , Kuhn, Alexis , Hentz, Roland

Journal of Pediatric Hematology/Oncology | March 27, 2026 | Volume: 48 | Issue: 3 | Pages: 114-124

10.1097/mph.0000000000003178 Get It

There have been no large comparisons of the clinical and laboratory features of familial neonatal hemophagocytosis (f-nHLH) and infectious neonatal hemophagocytosis (i-nHLH). The objectives of this study were the following: (1) Describe the demographic, diagnostic, and clinical features of patients with familial nHLH (F-nHLH) and infectious HLH (i-nHLH). (2) Compare key variables between f-nHLH and i-nHLH. (3) Compare the clinical outcomes of f-nHLH and i-nHLH. (4) Summarize literature on cytokine levels in patients with nHLH. Data from a previously published nHLH meta-analysis report were used to describe and compare features of infants with f-nHLH versus i-nHLH. Variables were tested with the χ 2 test or Fisher exact test, Cochran-Armitage test, independent 2-sample t test, or Wilcoxon rank-sum test as appropriate. Odds ratios were calculated for any comparison with a P -value of <0.05. Data extracted from 99 cases of f-nHLH and 54 cases of i-nHLH were included in this analysis. Infants with f-HLH met HLH criteria at the following rates: fever (84%); organomegaly (100%); pancytopenia (75%); hypofibrinogenemia (84%); hypertriglyceridemia (48%); hypofibrinogenemia or hypertriglyceridemia (82%); hemophagocytosis (81%); hyperferritinemia (99%); low or absent NK cell activity (91%); and elevated soluble CCD25 (91%). Infants with i-nHLH had higher median ferritin levels (22,537 ng/mL) than infants with f-nHLH (7587 ng/mL) ( P =0.072). Infants with f-nHLH had higher rates of symptoms in utero, preterm birth, family history of HLH, and family history of infant death. The overall survival among infants with familial nHLH was lower than infectious nHLH ( P =0.037). Management of nHLH requires rapid diagnosis and prompt treatment, as current literature suggests nHLH has high mortality rates. Distinguishing between familial and infectious causes of nHLH can aid in determining the correct treatment of choice.
Impact of routine collection of electronic patient-reported outcome measures (ePROMs) coupled with a collaborative care (CC)-based symptom intervention in patients with early-onset colorectal cancer (eoCRC).
Jin, Zhaohui, Ruddy, Kathryn J. , Pachman, Deirdre R. , Kour, Oudom, Rahman, Parvez, Greenmyer, Jacob R. , Augustin, Ryan Christian, Grzegorczyk, Veronica , Smith, Ashley , Mitchell, S. Weir, Shi, Qian , Storandt, Michael H. , Jin, Zhaohui , Rahman, Parvez, Cheville, Andrea

Journal of Clinical Oncology | January 12, 2026 | Volume: 44 | Issue: 2_suppl | Pages: 64-64

10.1200/jco.2026.44.2_suppl.64 Get It

64 Background: The incidence of eoCRC (diagnosed at age <50) is increasing. We have previously shown higher rates of severe anxiety and depression in this group compared to adults diagnosed at age ≥50 (average-onset CRC, aoCRC). We assessed the impact of ePROM collection coupled with a CC-based supportive care intervention on symptom burden in patients with eoCRC. Methods: The Enhanced, EHR-facilitated Cancer Symptom Control (E2C2) trial was a cluster-randomized, pragmatic trial conducted at Mayo Clinic Rochester and within the Mayo Clinic Health System (in Minnesota and Wisconsin) between 2019 and 2023. Enrolled patients serially reported the severity of six SPPADE symptoms (Sleep deficit, Pain, Physical function impairment, Anxiety, Depression, and Energy deficit/fatigue) on 11-point numerical rating scales. Symptom scores were interpreted as none to mild (0-3), moderate (4-6), or severe (7-10). Those with moderate symptoms were offered symptom management education and self-management materials, while those with severe symptoms were offered the option to work with a symptom care manager. In this post hoc analysis we examined the effects of the intervention on change in symptom scores among those with eoCRC, and using the Kaplan-Meier method, the median time to improvement to a mild/moderate level in those with a severe symptom, comparing eoCRC with aoCRC. Results: Among 4,422 patients with CRC, 887 had eoCRC. Forty-six percent of patients were female ( p =0.61), and a greater proportion of eoCRC patients were of a non-white race (11.6% vs 4.7%), lived in an urban setting (65.6% vs 50.5%), had a Bachelor’s degree or higher (36.8% vs 24.4%), were employed (78.5% vs 36.7%), on a non-government insurance plan (83.4% vs 35.3%), single (19.7% vs 11.2%) or married (74.2% vs 67.9%), and had metastatic disease (54.8% vs 46.1%, p <0.0001 for all). Compared to a pre-intervention baseline, the mean change in symptom scores for eoCRC patients following the intervention demonstrated improvements in anxiety (-0.238), depression (-0.134), and fatigue (-0.146, p <0.05 for all). Time to symptom improvement from severe to mild/moderate was longer for anxiety and depression in eoCRC patients compared to aoCRC patients (Table 1). Conclusions: Collection of ePROMs coupled with a CC-based intervention led to improvements in anxiety, depression, and fatigue among eoCRC patients, although time to symptom improvement was longer among eoCRC patients compared to aoCRC patients. Time to improvement of severe symptom (months), median (95% CI). eoCRC aoCRC p -value Sleep 4.2 (3.1-5.8) 3.8 (2.7-5.4) 0.4 Pain 4.1 (3.0-7.5) 3.2 (2.3-5.0) 0.5 Physical function impairment 3.1 (1.9-6.3) 2.8 (2.2-4.2) 0.5 Anxiety 4.3 (3.4-9.1) 2.6 (2.0-3.5) 0.009 Depression 4.3 (2.6-7.5) 2.6 (2.1-3.5) 0.04 Fatigue 4.3 (3.7-9.5) 3.4 (2.7-4.2) 0.06
Evaluation of platelet dense granules by transmission electron microscopy in healthy pediatric donors and pediatric patients with suspected platelet disorders
Greenmyer, Jacob R. , Howell, Kyle G., Johnson, Brandi, Drapeau, Noelle, Stromback, Lindsay R., Charlesworth, Jon E. , Gossman, Susan C., Gamez, Jeffrey D., Pruthi, Rajiv K. , Chen, Dong , Fischer, Karen M. , Warad, Deepti

Platelets | November 28, 2025 | Volume: 36 | Issue: 1 | Pages: No page available

10.1080/09537104.2025.2590752 Get It

Longitudinal Public Speaking Curriculum for Residents: Trainee Attitudes and Perceptions
Greenmyer, Jacob R. , Benning, Tyler J. , Castillo, Richmond , Homme, James L. , Homme, James, Knoebel, Erin, Youssef, Molly J. , Homme, Jason H. , Youssef, Molly, Homme, Jason , Homme, James, Taggart, Nathaniel W. , Hall, David J.

Journal of Medical Education and Curricular Development | October 31, 2025 | Volume: 12 | Issue: No issue available | Pages: No page available

10.1177/23821205251390313 Get It

Objective This survey study assessed trainee attitudes and perceptions of the longitudinal public speaking curriculum at Mayo Clinic Pediatric and Adolescent Residency Program. Methods This 3-part survey of Mayo Clinic pediatric residents was conducted from 2013 to 2017 and utilized yes/no questions, Likert scales, and open-ended questions. Code book content analysis was used to analyze open-ended questions. Results A total of 121 participants (96.8%, n = 121/125) completed the survey. Most respondents (93.3%, n = 111/119) either agreed or strongly agreed that the public speaking requirement enabled them to be more effective in delivering information to large groups. Most respondents (89.2%, n = 107/120) agreed or strongly agreed that they incorporated feedback from previous public speaking feedback sessions into subsequent presentations. The 2 activities that respondents found most useful for preparing later presentations were setting goals for future presentations in a feedback session and discussing performance in a feedback session. Conclusions There was a perceived effectiveness of a longitudinal public speaking curriculum among pediatric residents at our program. Multidimensional feedback seems to be a critical aspect of a public speaking curriculum in graduate medical education.
Reducing unnecessary emergency department visits and hospitalizations in the management of pediatric febrile neutropenia.
Greenmyer, Jacob R. , Galardy, Paul J. , Kalmes, Jessica, Allen‐Rhoades, Wendy , Johnson, Heather, Ferdjallah, Asmaa , Pritchett, Joshua C.

JCO Oncology Practice | October 7, 2025 | Volume: 21 | Issue: 10_suppl | Pages: 345-345

10.1200/op.2025.21.10_suppl.345 Get It

345 Background: Pediatric febrile neutropenia (PFN) requires emergent evaluation due to risk of invasive bacterial infection. In the management of PFN, there are varying, accepted definitions for fever requiring emergency evaluation and neutropenia requiring admission. Problem statement: From September 1, 2022 - May 31, 2023, 15.1% (n = 11/73) of emergency department (ED) visits and 17.1% (n = 6/35) of admissions for PFN at Mayo Clinic Rochester may be considered unnecessary due to patients not meeting updated clinical criteria. Aim: Decrease unnecessary ED visits and hospitalizations for PFN by 50% from 15.1% to 7.5% (for ED visits) and from 17.1% to 8.6% (for hospitalizations) by 02/29/2024 without adversely impacting mortality from invasive bacterial infection. Methods: We used the DMAIC framework for process improvement. Interventions included (1) adoption of a higher fever definition for PFN, (2) adoption of a risk-stratified neutropenia definition for hospital admission, (3) provided electronic fever plans with definitions to all families, (4) re-iterated that parents call on-call provider with any concern for fever, (5) educated pediatric oncology staff on definition and management of fevers in pediatric oncology patients, and (6) educated pediatric emergency department staff on definition and management of fevers in pediatric oncology patients. Interventions were tested with rapid tests of change. Relevant clinical characteristics, variables, and outcomes for all patients from pediatric oncology were tracked for all encounters of pediatric oncology patients presenting to the ED for acute illnesses. Results: At baseline,15.1% (n = 11/73) of ED visits for PFN were considered unnecessary due to patients not meeting clinical criteria for emergency evaluation. Post-interventions, unnecessary ED visits for PFN had decreased to 3.4% (n = 1/32). At baseline, 17.1% (n = 6/35) of hospitalizations were considered unnecessary due to patients not meeting clinical criteria for admission. Post-interventions, 7.7% (n = 2/26) of hospitalizations were considered unnecessary. There were no patient deaths from invasive bacterial infection among this cohort at baseline or after interventions. Conclusions: Multiple interventions including adoption of a higher, accepted fever threshold and risk stratified neutropenia definition for PFN was associated with a reduction of unnecessary ED visits and hospitalizations for PFN without an increase in mortality from invasive bacterial infection. The projected medical expense savings of approximately $144,000-$210,000 per year.
Improving documented rates of comprehensive vaccination status assessment and vaccination recommendation in patients receiving chemotherapy at a breast medical oncology clinic.
Greenmyer, Jacob R. , Hoppenworth, Jenna, Huschka, David J., Volety, Rama, Taraba, Jodi L. , Tevaarwerk, Amyé , Volety, Rama , Taraba, Jodi L , Allen‐Rhoades, Wendy

JCO Oncology Practice | October 7, 2025 | Volume: 21 | Issue: 10_suppl | Pages: 431-431

10.1200/op.2025.21.10_suppl.431 Get It

431 Background: The National Adult and Influenza Immunization Summit (NAIIS) promoted clinical subspecialist efforts toward vaccination assessment and recommendation as one strategy to increase adult vaccination rates. Problem Statement: Between August 1, 2022, and May 31, 2023, 0% (n=0/100) of patients seen in medical oncology at Mayo Clinic (Rochester, MN) and receiving chemotherapy for breast cancer had a documented comprehensive vaccination status assessment by breast medical oncology staff. Aim Statements: (1) To increase the rate of comprehensive vaccination status assessment performed by breast medical oncology staff from 0% to 75% of patients receiving chemotherapy for breast cancer by September 2024. (2) To increase the rate of documented vaccination recommendation for patients who were not up to date with recommended vaccinations from 0% to 50% by September 2024. Methods: We deployed multiple interventions including physician and nurse education; development of patient education materials; and a standard operating procedure (SOP) for vaccination status assessment, vaccination recommendation, and vaccine-related documentation. Our SOP utilized an Epic SmartPhrase with following elements: (1) SmartLink that autopopulated overdue vaccinations, (2) hidden tip text permitting the use to hyperlink to Health Maintenance, (3) SmartLists that captured nurse actions (e.g., provided education) and encounter outcomes (e.g., patient endorsed plans to receive vaccinations), and (4) scripting for immunization education. Results: Multi-faceted interventions were associated with an improvement in the documented rate of comprehensive vaccination status assessment from 0% (n=0/100) to 82.8% (n=101/122). Most patients (77.2%, n=78/101) were not up to date with recommended vaccinations. Recommendations for appropriate vaccinations were made for 80.8% (n=63/78) of patients who were not up to date. Only 19.2% (n=15/78) of patients who were not up to date endorsed intention to receive missing/recommended vaccines. Counterbalance: Nurses were able to assess vaccination status and make appropriate recommendations in less than 5 minutes per patient. There was no difference in nurse-reported workflow burden related to vaccination status assessment, recommendation, or documentation after intervention. Conclusions: This quality project aligned our breast medical oncology practice with vaccination-related care promoted by NAIIS. We increased rates of vaccination status assessment and vaccination recommendations without impacting nurse-reported workflow burden. Medical subspecialty clinic engagement in vaccination efforts is feasible.
Equivalent incidences of paediatric graft‐versus‐host disease regardless of donor–recipient matching in the era of modern prophylaxis agents
Ariagno, Sydney , Greenmyer, Jacob R. , Kuhn, Alexis , Pence, Lindy, O’Shea, Mary, Greenmyer, Lauren, Cole, Kristin , Ferdjallah, Asmaa , Kohorst, Mira A. , Mara, Kristin C. , Ariagno, Sydney , Greenmyer, Jacob, Kuhn, Alexis K , Mara, Kristin C

British Journal of Haematology | September 27, 2025 | Volume: 207 | Issue: 6 | Pages: 2517-2528

10.1111/bjh.70184 Get It

Summary Recipients of haploidentical and unrelated haematopoietic cell transplants (HCTs) historically had a higher risk for graft‐versus‐host disease (GvHD). However, with improved GvHD prophylaxis, recent data suggest adult patients undergoing transplantation from unrelated or mismatched donors now experience the rates of GvHD similar to those receiving matched related donor grafts. This finding is not yet explored in paediatric patients. The objectives of this study were to: (1) compare acute and chronic GvHD incidence, mortality and GvHD‐free relapse‐free survival (GRFS) among matched related donor (MRD), matched unrelated donor (MUD) and haploidentical paediatric HCT recipients in the era of enhanced GvHD prophylaxis for high‐risk patients, (2) identify independent risk factors for GvHD and (3) evaluate the efficacy of various GvHD prophylactic regimens in our cohort. We conducted a retrospective, single‐centre medical record abstraction among patients aged 0–25 years who underwent allogeneic HCT for any indication. The results demonstrated that 5‐year cumulative incidence rates of any GvHD, all‐cause mortality and GRFS are similar across the haploidentical, MRD and MUD groups. Tacrolimus‐containing doublet/triplet regimens were associated with decreased GvHD, as compared to ciclosporin. Adding alemtuzumab also decreased risk for GvHD, without increasing relapse rates. Prospective studies with larger cohorts are warranted to further optimize outcomes for paediatric allogeneic HCT patients.
Symptom Burden in Adolescents and Young Adults With Cancer
Ruddy, Kathryn J. , Pachman, Deirdre R. , Kour, Oudom, Grzegorczyk, Veronica , Ehlers, Shawna L. , Cobran, Ewan K. , Greenmyer, Jacob R. , Lam, Veronica , Ehlers, Shawna , Storandt, Michael H. , Jin, Zhaohui , Kroenke, Kurt , Griffin, Joan M. , Austin, Jessica D. , Mitchell, Sandra A , Smith, Ashley Wilder , Chlan, Linda L. , Allen‐Rhoades, Wendy , Shi, Qian , Cheville, Andrea

JAMA Network Open | August 18, 2025 | Volume: 8 | Issue: 8 | Pages: e2527421

10.1001/jamanetworkopen.2025.27421 Get It

This cross-sectional study analyzes patient-reported outcome findings from the Enhanced, Electronic Health Record–Facilitated Cancer Symptom Control (E2C2) trial to investigate level of symptom burden in adolescents and young adults with cancer.