Image Place holder

Nancy Gillis Johnson, PharmD, PhD

Program: Cancer Epidemiology

Google Scholar Profile



    • Malignant Hematology
    • Cancer Epidemiology
    • Cancer Epidemiology Program
    • Cancer Epidemiology Program

Education & Training


  • University of Florida, PharmD - Clinical Pharmacy
  • University of North Carolina, PhD - Pharmaceutical Sciences/Oncology Pharmacogenetics


  • Moffitt Cancer CenterMolecular Epidemiology of Cancer

Dr. Gillis is a molecular epidemiologist with a background in pharmacogenomics and personalized medicine. Her current research focuses on elucidating the clinical significance of clonal hematopoiesis, a pre-leukemic condition, in patients with cancer. A goal of her research program is to quantify clonal hematopoiesis as a risk factor and identify interventions or management strategies that can be translated to clinic to improve patient outcomes.    


  • Abel GA, Hebert D, Lee C, Rollison DE, Gillis N, Komrokji RS, Foran JM, Liu JJ, Al Baghdadi T, Deeg HJ, Gore SD, Saber W, Wilson SH, Otterstatter M, Thompson J, Borchert C, Padron E, DeZern A, Cella D, Sekeres MA. Health-Related Quality of Life and Vulnerability among People with Myelodysplastic Syndromes: A US National Study. Blood Adv. 2023 May. Pubmedid: 37146263.
  • DeZern AE, Goll JB, Lindsley RC, Bejar R, Wilson SH, Hebert D, Deeg HJ, Zhang L, Gore SD, Al Baghdadi T, Maciejewski JP, Liu JJ, Padron E, Komrokji RS, Saber W, Abel GA, Kroft SH, Harrington AM, Grimes T, Reed HHV, Fulton RS, DiFronzo NL, Gillis N, Sekeres MA, Walter MJ. Utility of Targeted Gene Sequencing to Differentiate Myeloid Malignancies from other Cytopenic Conditions. Blood Adv. 2023 Mar. Pubmedid: 36947201.
  • Gillis N, Etheridge AS, Patil SA, Hayes DN, Hayward MC, Auman JT, Parker JS, Innocenti F. Sequencing of genes of drug response in tumor DNA and implications for precision medicine in cancer patients. Pharmacogenomics J. 2023 Jan. Pubmedid: 36709390.
  • Saini NY, Swoboda DM, Greenbaum U, Ma J, Patel RD, Devashish K, Das K, Tanner MR, Strati P, Nair R, Fayad L, Ahmed S, Lee HJ, Iyer SP, Steiner R, Jain N, Nastoupil L, Loghavi S, Tang G, Bassett RL, Jain P, Wang M, Westin JR, Green MR, Sallman DA, Padron E, Davila ML, Locke FL, Champlin RE, Garcia-Manero G, Shpall EJ, Kebriaei P, Flowers CR, Jain MD, Wang F, Futreal AP, Gillis N, Neelapu SS, Takahashi K. Clonal Hematopoiesis Is Associated with Increased Risk of Severe Neurotoxicity in Axicabtagene Ciloleucel Therapy of Large B-Cell Lymphoma. Blood Cancer Discov. 2022 Sep.3(5):385-393. Pubmedid: 35533245. Pmcid: PMC9445749.
  • Peres LC, Colin-Leitzinger C, Teng M, Dutil J, Alugubelli RR, DeAvila G, Teer JK, Du D, Mo Q, Siegel EM, Hampton O, Alsina M, Brayer J, Blue B, Baz R, Siqueira Silva A, Nishihori T, Shain KH, Gillis N. Racial and ethnic differences in clonal hematopoiesis, tumor markers, and outcomes of patients with multiple myeloma. Blood Adv. 2022 Jun.6(12):3767-3778. Pubmedid: 35500227. Pmcid: PMC9631567.
  • Braithwaite D, Anton S, Mohile S, DeGregori J, Gillis N, Zhou D, Bloodworth S, Pahor M, Licht J. Cancer and aging: A call to action. Aging Cancer. 2022 Jun.3(2):87-94. Pubmedid: 36188489. Pmcid: PMC9521708.
  • Bolton KL, Ptashkin RN, Gao T, Braunstein L, Devlin SM, Kelly D, Patel M, Berthon A, Syed A, Yabe M, Coombs CC, Caltabellotta NM, Walsh M, Offit K, Stadler Z, Mandelker D, Schulman J, Patel A, Philip J, Bernard E, Gundem G, Ossa JEA, Levine M, Martinez JSM, Farnoud N, Glodzik D, Li S, Robson ME, Lee C, Pharoah PDP, Stopsack KH, Spitzer B, Mantha S, Fagin J, Boucai L, Gibson CJ, Ebert BL, Young AL, Druley T, Takahashi K, Gillis N, Ball M, Padron E, Hyman DM, Baselga J, Norton L, Gardos S, Klimek VM, Scher H, Bajorin D, Paraiso E, Benayed R, Arcila ME, Ladanyi M, Solit DB, Berger MF, Tallman M, Garcia-Closas M, Chatterjee N, Diaz LA, Levine RL, Morton LM, Zehir A, Papaemmanuil E. Cancer therapy shapes the fitness landscape of clonal hematopoiesis. Nat Genetics. 2020 Nov.52(11):1219-1226. Pubmedid: 33106634. Pmcid: PMC7891089.
  • Bolton KL, Gillis NK, Coombs CC, Takahashi K, Zehir A, Bejar R, Garcia-Manero G, Futreal A, Jensen BC, Diaz LA, Gupta D, Mantha S, Klimek V, Papaemmanuil E, Levine R, Padron E. Managing Clonal Hematopoiesis in Patients With Solid Tumors. J Clin Oncol. 2019 Jan.37(1):7-11. Pubmedid: 30403571. Pmcid: PMC6354773.
  • Vela CM, Van den Bergh M, Gillis NK, Ball M, Hussaini MO, Walko CM, Hicks JK, Perez L, Padron E, Komrokji RS. Somatic Sequencing Identifies Trametinib-Responsive Myelodysplastic Syndrome and Finds Acquired Clonal Hematopoiesis of Indeterminate Potential. JCO Precis Oncol. 2018 Nov.2. Pubmedid: 35135101. Pmcid: PMC9797240.
  • Coombs CC, Gillis NK, Tan X, Berg JS, Ball MC, Balasis ME, Montgomery ND, Bolton K, Parker JS, Mesa TE, Yoder SJ, Hayward MC, Patel NM, Richards KL, Walko CM, Knepper TC, Soper JT, Weiss J, Grilley-Olson JE, Kim WY, Earp S, Levine R, Papaemmanuil E, Zehir A, Hayes DN, Padron E. Identification of Clonal Hematopoiesis Mutations in Solid Tumor Patients Undergoing Unpaired Next-Generation Sequencing Assays. Clin Cancer Res. 2018 Dec.24(23):5918-5924. Pubmedid: 29866652. Pmcid: PMC6812550.
  • Vela CM, Knepper TC, Gillis NK, Walko CM, McLeod HL, Hicks JK. Quantitation of Targetable Somatic Mutations Among Patients Evaluated by a Personalized Medicine Clinical Service: Considerations for Off-Label Drug Use. Pharmacotherapy. 2017 Sep.37(9):1043-1051. Pubmedid: 28235141.
  • Gillis NK, Hicks JK, Bell GC, Daly AJ, Kanetsky PA, McLeod HL. Incidence and Triggers of Stevens-Johnson Syndrome and Toxic Epidermal Necrolysis in a Large Cancer Patient Cohort. J Invest Dermatol. 2017 Sep.137(9):2021-2023. Pubmedid: 28549953.
  • Gillis NK, Padron E. Chipping in on clonal hematopoiesis. Oncotarget. 2017 Oct.8(49):84637-84638. Pubmedid: 29156670. Pmcid: PMC5689560.
  • Gillis NK, Ball M, Zhang Q, Ma Z, Zhao Y, Yoder SJ, Balasis ME, Mesa TE, Sallman DA, Lancet JE, Komrokji RS, List AF, McLeod HL, Alsina M, Baz R, Shain KH, Rollison DE, Padron E. Clonal haemopoiesis and therapy-related myeloid malignancies in elderly patients: a proof-of-concept, case-control study. Lancet Oncol. 2017 Jan.18(1):112-121. Pubmedid: 27927582. Pmcid: PMC7771361.
  • Knepper TC, Bell GC, Hicks JK, Padron E, Teer JK, Vo TT, Gillis NK, Mason NT, McLeod HL, Walko CM. Key Lessons Learned from Moffitt's Molecular Tumor Board: The Clinical Genomics Action Committee Experience. Oncologist. 2017 Feb.22(2):144-151. Pubmedid: 28179575. Pmcid: PMC5330702.
  • Gillis NK, Rotroff DM, Mesa TE, Yao J, Chen Z, Carulli MA, Yoder SJ, Walko CM, Teer JK, McLeod HL. Tumor exome sequencing and copy number alterations reveal potential predictors of intrinsic resistance to multi-targeted tyrosine kinase inhibitors. Oncotarget. 2017 Dec.8(70):115114-115127. Pubmedid: 29383146. Pmcid: PMC5777758.
  • Gillis NK, McLeod HL. The pharmacogenomics of drug resistance to protein kinase inhibitors. Drug Resist Updat. 2016 Sep.28:28-42. Pubmedid: 27620953. Pmcid: PMC5022787.
  • Gillis NK, Patel JN, Innocenti F. Clinical implementation of germ line cancer pharmacogenetic variants during the next-generation sequencing era. Clin Pharmacol Ther. 2014 Mar.95(3):269-280. Pubmedid: 24136381. Pmcid: PMC4128332.
  • Gillis NK, Innocenti F. Evidence required to demonstrate clinical utility of pharmacogenetic testing: the debate continues. Clin Pharmacol Ther. 2014 Dec.96(6):655-657. Pubmedid: 25399714.
  • McDonough CW, Gillis NK, Alsultan A, Chang SW, Kawaguchi-Suzuki M, Lang JE, Shahin MH, Buford TW, El Rouby NM, Sá AC, Langaee TY, Gums JG, Chapman AB, Cooper-DeHoff RM, Turner ST, Gong Y, Johnson JA. Atenolol induced HDL-C change in the pharmacogenomic evaluation of antihypertensive responses (PEAR) study. PLoS One. 2013 Oct.8(10):e76984. Pubmedid: 24116192. Pmcid: PMC3792156.
  • Gillis NK, Zhu HJ, Markowitz JS. An in vitro evaluation of guanfacine as a substrate for P-glycoprotein. Neuropsychiatr Dis Treat. 2011 Aug.7:501-505. Pubmedid: 21931492. Pmcid: PMC3173033.


  • Title: Evolution and Clinical Impact of Clonal Hematopoiesis of Indeterminate Potential Breast Tumor Microenvironment
    Sponsor: Nat Institutes of Health
    PI: Johnson, N.
  • Title: The National Myelodysplastic Syndromes Natural History Study (The National MDS Study)
    Sponsor: Nat Institutes of Health
    PI (Contact): Padron, E., PI (MPI): Johnson, N.
  • Title: HIV Genomic Aging Project in Oncology (HIV-GAP)
    Sponsor: Nat Institutes of Health
    PI (Contact): Coghill, A., PI (MPI): Johnson, N.