Rheumatology
Clinical discussions on autoimmune diseases, biologic therapies, vasculitis, and musculoskeletal conditions.
Recent Discussions
How do you work up patients who present with elevated myoglobin in the setting of normal creatinine kinase and exercise intolerance?
Myoglobin may originate either from cardiac or skeletal muscle; therefore, I would first try pinpointing the origin with troponins and CK fractions. I would work up the exercise intolerance with a non-ischemic forearm test to determine whether a flat lactate curve is present. In that case, I’d typic...
Before re-challenging a patient with ICI after grade 1-2 pneumonitis, do you re-image to confirm resolution of pneumonitis?
Grade 1 pneumonitis is defined as confined to one lobe of the lung or <25% of the total lung parenchyma, while grade 2 pneumonitis is defined as involving more than one lobe of the lung or 25-50% of the lung parenchyma. Grade 1 pneumonitis is typically an incidental finding on CT in an asymptomatic ...
How do you approach laboratory evaluation in patients with fatigue?
First search for evidence by history and physical examination for any evidence of inflammation. If there is tailor the lab workup rather than ordering tests as screening tools. ESR and CRP to start with. Anything more without a reasonable a priori likelihood of the targeted diagnosis is just asking ...
Where in the sequence of biologics would you consider guselkumab for patients with active psoriatic arthritis despite standard DMARD therapy?
This is an extremely important question and one that is likely to change as new data becomes available. It is important to remember that psoriatic arthritis (PsA) is a complex and heterogeneous disease and a single approach does not work for every patient. Based on the ACR/NPF 2019 PsA treatment gui...
How do you interpret treatment response in the DISCOVER-2 Trial when patients were allowed to remain on up to 10mg of prednisone equivalent for disease control while on guselkumab?
The dependence on the use of systemic glucocorticoids may indeed be a good reason to change treatment. Especially in patients with psoriatic arthritis. So, if patients are unable to stop systemic glucocorticoids and there are still treatment options for the patient, this could be tried. It is diffic...
What maintenance regimen do you use for a patient with lupus cerebritis?
I prefer a mycophenolate analogue (MPA, usually mycophenolate mofetil, MMF, but prefer mycophenolic acid if on a PPI, which causes reduced MMF bioavailability, or if MMF intolerant) over azathioprine (AZA) for maintenance.Reasoning is that MPAs have shown better efficacy in improving outcomes and pr...
Do you routinely evaluate patients with collagen disorders or Ehlers-Danlos for platelet defects?
Yes, I routinely carry out a full hemostasis evaluation, including platelet aggregation and release studies, in patients referred to me with easy bruising and hypermobility with an increased Beighton score suggesting EDS and in those already diagnosed genetically with EDS. EDS patients typically hav...
Do you routinely supplement folic acid in patients with rheumatoid arthritis who are taking sulfasalazine?
Full disclosure. I'm not a fan of SSZ in general. I think it is a relic of 20th-century rheumatology when the choices were gold, penicillamine, and a few other toxic molecules. Nonetheless, I know that there is an audience for SSZ where biological options are less readily available. In my own experi...
Would the need for infliximab/MTX/nonsteroidals to control initial irAE affect your decision to rechallenge these patients with ICI?
Infliximab and methotrexate are generally used in irAE grades 3 or 4, or in grade 2 irAEs that are refractory to initial treatment with steroids. Methotrexate is typically used for irAEs of the musculoskeletal system, such as inflammatory arthritis or myositis. Infliximab tends to be used in the set...
Is there a period of time after which you would not resume ICI after a patient has had an irAE and required a prolonged steroid taper?
Typically if a patient has required treatment with steroids for four to six months, it was because their irAE was significant (grade 2-4) and refractory to initial treatment. If the patient received combination immunotherapy, such as anti-CTLA-4 and anti-PD-1 agents, one could consider resuming the ...