Rheumatology
Clinical discussions on autoimmune diseases, biologic therapies, vasculitis, and musculoskeletal conditions.
Recent Discussions
In a patient with known APS (triple positive) and interstitial lung disease (NSIP), how do you distinguish APS associated lung involvement from connective tissue disease related ILD?
Patients with APS typically have vascular and thrombotic pulmonary disease, and very rarely has interstitial disease been ascribed to APS. The most common pulmonary manifestation of APS is pulmonary embolism, occurring in 14-16% of patients, followed by pulmonary hypertension often caused by chronic...
How often are you performing CT screening in CVID patients to screen for ILD?
CT once every 1-2 years, depending on symptoms and PFTs. PFTs, including DLCO, are annually performed.
With the increasing availability of biosimilars and their adoption onto payer formularies, how do you approach selection among available biosimilars in clinical practice?
Insurance payers consider FDA‑approved biosimilars to be clinically equivalent. In my experience, selection is ultimately driven by the insurance payer formulary - what you can get for the patient on the time. This can be fleeting and quickly changing at times. Cases can be made for patient experien...
In patients with inflammatory arthritis (RA, psoriatic arthritis) and a history of MGUS are there any concerns regarding use of biologics?
There is no absolute contraindication to any particular biologic used to manage active RA in a patient with MGUS. The literature does point out a small potential risk associated with tocilizumab in terms of development of myeloma influenced by the IL-6 pathway (and I would tend to extend that potent...
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...
What is your approach to differentiating between drug induced lupus versus elderly onset SLE?
Close to 50% of SLE patients are anti-histone positive. In a scenario like this, it is not helpful. This is SLE until proven otherwise. Regarding elderly onset SLE vs drug-induced lupus, I evaluate and distinguish them similarly to how I do in younger patients.
How long would you recommend that a patient continues guselkumab prior to deciding that the therapy is not effective?
Many trials have a placebo-controlled period of 12-24 weeks. Thereafter, all patients receive active treatment. Even if the original treatment allocation remains unknown to the patient and doctor, they know that from that moment on, everyone receives active treatment. This will have an influence on ...
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...
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 ...