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Panniculitis following baricitinib initiation for treatment of rheumatoid arthritis

Joint Bone Spine, 2020
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Please cite this article in press as: Fike A, et al. Panniculitis following baricitinib initiation for treatment of rheumatoid arthritis. Joint Bone Spine (2020), https://doi.org/10.1016/j.jbspin.2020.04.002 ARTICLE IN PRESS G Model BONSOI-4990; No. of Pages 2 Joint Bone Spine xxx (2020) xxx–xxx Available online at ScienceDirect www.sciencedirect.com Letter to the Editor Panniculitis following baricitinib initiation for treat- ment of rheumatoid arthritis a r t i c l e i n f o Keywords: Drug related side effects and adverse reactions Rheumatoid arthritis JAK inhibitors Panniculitis Baricitinib is a janus kinase (JAK) inhibitor with initial approval for treatment of adults with rheumatoid arthritis (RA) in 2017 [1] that selectively inhibits JAK1 and JAK2 [2] and is under investigation in juvenile dermatomyositis and systemic lupus erythematosus (SLE) [3]. Different JAK inhibitors preferentially target various JAK isoforms, which may result in differences in adverse event profiles [4]. We describe what to our knowledge is the first reported case of panniculitis developing in a patient receiving baricitinib for treat- ment of RA. A 43-year-old woman with RA presented to clinic on day 23 of baricitinib therapy with a 20-day history of subacute, painful, pruritic lesions on her extremities and buttocks (Fig. 1). On day 17 of therapy, she presented to an Emergency Department (ED) for evaluation. Examinations revealed platelets of 228 K/mcL, D- dimer of < 0.27 mcg/mL, and a doppler ultrasound without evidence of venous thrombus. The patient held baricitinib the days of and after the ED visit (Days 17–18). She resumed baricitinib on Day 19, and experienced acute worsening of symptoms within two days (Fig. 2). After notifying us on day 22, we instructed her to dis- continue baricitinib pending evaluation. The patient’s RA history was complicated by hypersensitivity vasculitis and recalcitrance to numerous biologic treatments. The patient received tofacitinib for six months-years prior without adverse event but stopped due to ineffectiveness. Her autoimmune serologic profile was notable only for anti-cyclic citrullinated peptide antibodies and rheumatoid factor. The patient’s medications included baricitinib 2 mg daily, methotrexate 20 mg weekly, hydroxychloroquine 400 mg daily, and prednisone 7.5 mg daily. On physical examination, the patient’s posterior lower legs demonstrated tender, indurated, coalescing hyperpigmented plaques and subtle plaques on the anterior upper legs, buttocks and forearm. Her musculoskeletal exam was notable for bilateral ankle synovitis. The patient was instructed to discontinue baricitinib per- manently with no other interventions. On Day 58, all evidence of panniculitis was resolved. The differential diagnosis included erythema nodosum, a drug reaction to baricitinib, and vasculitides including erythema indura- tum. The normal d-dimer and negative ultrasound performed on Fig. 1. Skin lesions on Day 17 after starting baricitinib. day 17 made a thrombotic event unlikely. The exam findings were satisfactory for diagnosis of panniculitis per dermatology. Given the association of the onset of the lesions in relationship to baricitinib initiation, the increase in intensity of inflammation documented in photos after a short dechallenge and subsequent rechallenge, this panniculitus was attributed to baricitinib. We submitted a report describing this adverse event to the United States Federal Drug Administration Medwatch program as well as to the manufacturer of baricitinib. Baricitinib has potential applications in dermato- myositis and SLE which can manifest with panniculitis in a similar distribution as our patient, potentially causing confusion in patients treated with baricitinib with previous or new manifestations of panniculitis. We report what we believe to be the first case of panniculi- tis occurring with baricitinib. Our review of the literature revealed a case of vasculitis in a patient receiving tofacitinib for RA with histopathology suggestive of vasculitis and acute lobular panniculi- tis [5]. These cases highlight that clinicians must remain vigilant for detecting novel medication-associated adverse reactions occurring https://doi.org/10.1016/j.jbspin.2020.04.002 1297-319X/© 2020 Published by Elsevier Masson SAS on behalf of Soci ´ et ´ e franc¸ aise de rhumatologie.
Please cite this article in press as: Fike A, et al. Panniculitis following baricitinib initiation for treatment of rheumatoid arthritis. Joint Bone Spine (2020), https://doi.org/10.1016/j.jbspin.2020.04.002 ARTICLE IN PRESS G Model BONSOI-4990; No. of Pages 2 2 Letter to the Editor / Joint Bone Spine xxx (2020) xxx–xxx Fig. 2. Skin lesions on Day 22 after short dechallenge and rechallenge with barici- tinib. with newly-approved medications, especially considering poten- tial confusion with disease-related manifestations. Disclosure of interest The authors declare that they have no competing interest. Acknowledgments This research was financially supported by the Intramural Research Program of the National Institute of Arthritis and Musculoskeletal and Skin Diseases, National Institutes of Health. Dominique Pichard, MD for her contributions in acquiring clinical data. References [1] Olumiant product information, European public assessment report. Euro- pean Medicines Agency. [Internet. Accessed February 11, 2020]. Avail- able from: https://www.ema.europa.eu/en/medicines/human/EPAR/olumiant #authorisation-details-section. [2] Olumiant product information. Eli Lilly and Company. Indianapolis, IN 46285. Issued May 2018. [Internet. Accessed January 21, 2020]. Available from: https://www.accessdata.fda.gov/drugsatfda docs/label/2018/207924Orig 1s000lbl.pdf. [3] ClinicalTrials.gov. Baricitinib. [Internet. Accessed January 21, 2020]. Avail- able from: https://clinicaltrials.gov/ct2/results?cond=&term=baricitinib&cntry= &state=&city=&dist=. [4] Schwartz D, Kanno Y, Villarino A, et al. JAK inhibition as a therapeutic strategy for immune and inflammatory diseases. Nat Rev Drug Discov 2017;16:843–62. [5] Muraviev Y, Radenska-Lopovok S, Lebedeva V, et al. Nodular polyarteritis as an unforeseeable adverse reaction in RA patient treated with tofacitinib [abstract]. Ann Rheum Dis Suppl 2018;77:1370–1. Alice Fike a, Rhett Kent b Ann Biehl c Michael M. Ward c a Intramural Research Program, National Institutes of Arthritis, Musculoskeletal and Skin Diseases (NIAMS), 10 Center Drive Rm 10N318 Bethesda, Maryland 20892, United States b Forefront Dermatology, 8505 Arlington Blvd. Suite 210, Fairfax VA 22031, United States c Clinical Trials and Outcomes Branch, Intramural Research Program, National Institutes of Arthritis, Musculoskeletal and Skin Diseases (NIAMS), National Institutes of Health, 10 Center Drive Bethesda, Maryland 20892, United States Corresponding author. E-mail address: alice.fike@nih.gov (A. Fike) Accepted 8 April 2020 Available online xxx
G Model ARTICLE IN PRESS BONSOI-4990; No. of Pages 2 Joint Bone Spine xxx (2020) xxx–xxx Available online at ScienceDirect www.sciencedirect.com Letter to the Editor Panniculitis following baricitinib initiation for treatment of rheumatoid arthritis a r t i c l e i n f o Keywords: Drug related side effects and adverse reactions Rheumatoid arthritis JAK inhibitors Panniculitis Baricitinib is a janus kinase (JAK) inhibitor with initial approval for treatment of adults with rheumatoid arthritis (RA) in 2017 [1] that selectively inhibits JAK1 and JAK2 [2] and is under investigation in juvenile dermatomyositis and systemic lupus erythematosus (SLE) [3]. Different JAK inhibitors preferentially target various JAK isoforms, which may result in differences in adverse event profiles [4]. We describe what to our knowledge is the first reported case of panniculitis developing in a patient receiving baricitinib for treatment of RA. A 43-year-old woman with RA presented to clinic on day 23 of baricitinib therapy with a 20-day history of subacute, painful, pruritic lesions on her extremities and buttocks (Fig. 1). On day 17 of therapy, she presented to an Emergency Department (ED) for evaluation. Examinations revealed platelets of 228 K/mcL, Ddimer of < 0.27 mcg/mL, and a doppler ultrasound without evidence of venous thrombus. The patient held baricitinib the days of and after the ED visit (Days 17–18). She resumed baricitinib on Day 19, and experienced acute worsening of symptoms within two days (Fig. 2). After notifying us on day 22, we instructed her to discontinue baricitinib pending evaluation. The patient’s RA history was complicated by hypersensitivity vasculitis and recalcitrance to numerous biologic treatments. The patient received tofacitinib for six months-years prior without adverse event but stopped due to ineffectiveness. Her autoimmune serologic profile was notable only for anti-cyclic citrullinated peptide antibodies and rheumatoid factor. The patient’s medications included baricitinib 2 mg daily, methotrexate 20 mg weekly, hydroxychloroquine 400 mg daily, and prednisone 7.5 mg daily. On physical examination, the patient’s posterior lower legs demonstrated tender, indurated, coalescing hyperpigmented plaques and subtle plaques on the anterior upper legs, buttocks and forearm. Her musculoskeletal exam was notable for bilateral ankle synovitis. The patient was instructed to discontinue baricitinib permanently with no other interventions. On Day 58, all evidence of panniculitis was resolved. The differential diagnosis included erythema nodosum, a drug reaction to baricitinib, and vasculitides including erythema induratum. The normal d-dimer and negative ultrasound performed on Fig. 1. Skin lesions on Day 17 after starting baricitinib. day 17 made a thrombotic event unlikely. The exam findings were satisfactory for diagnosis of panniculitis per dermatology. Given the association of the onset of the lesions in relationship to baricitinib initiation, the increase in intensity of inflammation documented in photos after a short dechallenge and subsequent rechallenge, this panniculitus was attributed to baricitinib. We submitted a report describing this adverse event to the United States Federal Drug Administration Medwatch program as well as to the manufacturer of baricitinib. Baricitinib has potential applications in dermatomyositis and SLE which can manifest with panniculitis in a similar distribution as our patient, potentially causing confusion in patients treated with baricitinib with previous or new manifestations of panniculitis. We report what we believe to be the first case of panniculitis occurring with baricitinib. Our review of the literature revealed a case of vasculitis in a patient receiving tofacitinib for RA with histopathology suggestive of vasculitis and acute lobular panniculitis [5]. These cases highlight that clinicians must remain vigilant for detecting novel medication-associated adverse reactions occurring https://doi.org/10.1016/j.jbspin.2020.04.002 1297-319X/© 2020 Published by Elsevier Masson SAS on behalf of Société française de rhumatologie. Please cite this article in press as: Fike A, et al. Panniculitis following baricitinib initiation for treatment of rheumatoid arthritis. Joint Bone Spine (2020), https://doi.org/10.1016/j.jbspin.2020.04.002 G Model BONSOI-4990; No. of Pages 2 2 ARTICLE IN PRESS Letter to the Editor / Joint Bone Spine xxx (2020) xxx–xxx Musculoskeletal and Skin Diseases, National Institutes of Health. Dominique Pichard, MD for her contributions in acquiring clinical data. References [1] Olumiant product information, European public assessment report. European Medicines Agency. [Internet. Accessed February 11, 2020]. Available from: https://www.ema.europa.eu/en/medicines/human/EPAR/olumiant #authorisation-details-section. [2] Olumiant product information. Eli Lilly and Company. Indianapolis, IN 46285. Issued May 2018. [Internet. Accessed January 21, 2020]. Available from: https://www.accessdata.fda.gov/drugsatfda docs/label/2018/207924Orig 1s000lbl.pdf. [3] ClinicalTrials.gov. Baricitinib. [Internet. Accessed January 21, 2020]. Available from: https://clinicaltrials.gov/ct2/results?cond=&term=baricitinib&cntry= &state=&city=&dist=. [4] Schwartz D, Kanno Y, Villarino A, et al. JAK inhibition as a therapeutic strategy for immune and inflammatory diseases. Nat Rev Drug Discov 2017;16:843–62. [5] Muraviev Y, Radenska-Lopovok S, Lebedeva V, et al. Nodular polyarteritis as an unforeseeable adverse reaction in RA patient treated with tofacitinib [abstract]. Ann Rheum Dis Suppl 2018;77:1370–1. Fig. 2. Skin lesions on Day 22 after short dechallenge and rechallenge with baricitinib. with newly-approved medications, especially considering potential confusion with disease-related manifestations. Alice Fike a,∗ Rhett Kent b Ann Biehl c Michael M. Ward c a Intramural Research Program, National Institutes of Arthritis, Musculoskeletal and Skin Diseases (NIAMS), 10 Center Drive Rm 10N318 Bethesda, Maryland 20892, United States b Forefront Dermatology, 8505 Arlington Blvd. Suite 210, Fairfax VA 22031, United States c Clinical Trials and Outcomes Branch, Intramural Research Program, National Institutes of Arthritis, Musculoskeletal and Skin Diseases (NIAMS), National Institutes of Health, 10 Center Drive Bethesda, Maryland 20892, United States Disclosure of interest The authors declare that they have no competing interest. Acknowledgments ∗ Corresponding author. E-mail address: alice.fike@nih.gov (A. Fike) Accepted 8 April 2020 Available online xxx This research was financially supported by the Intramural Research Program of the National Institute of Arthritis and Please cite this article in press as: Fike A, et al. Panniculitis following baricitinib initiation for treatment of rheumatoid arthritis. Joint Bone Spine (2020), https://doi.org/10.1016/j.jbspin.2020.04.002
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