Rheumatology
Clinical discussions on autoimmune diseases, biologic therapies, vasculitis, and musculoskeletal conditions.
Recent Discussions
How would you approach the workup and management of a young patient with recurrent biannual non-scarring oral ulcers and new onset neurologic symptoms with associated CNS white matter lesions concerning for Behcet’s?
This is a challenging case. It should be noted that oral ulcers in Behcet's typically occur more than twice per year (by ISG criteria should occur at least 3x per year) and without other symptoms of BD it can be very challenging to make a probable diagnosis of BD in this scenario. A careful history ...
What is the difference between P155/140 and TIF1-γ antibodies on the ARUP myositis panel?
TIF1g is the name of the protein itself, whereas "p155/140" refers to the IP (immunoprecipitation) finding of 2 distinct bands at 155 kDa (TIF1g) and 140 kDa (TIF1a), indicative of an anti-TIF1g antibody response. Until recently, ARUP (like most commercial laboratories) used immunoblotting, as it is...
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 ...
In a young female with lupus cerebritis with seizures would you start induction therapy with Rituximab over cyclophosphamide?
I am not aware of a direct comparison of the efficacy of cyclophosphamide versus rituximab for treating lupus cerebritis with seizures. In cases of life-threatening progressive disease, giving both agents has been reported. Choosing between the two should involve in-depth patient education and invol...
How would you approach treatment for a patient with positive C- ANCA/PR3 with sinus/nasal limited disease, but no renal or pulmonary involvement?
The treatment of non-severe GPA varies amongst practitioners because of limited trial data and different practice patterns. 2021 ACR/VF guidelines conditionally recommend methotrexate and glucocorticoids. Rituximab would also be a reasonable option; therefore, I typically favor shared decision-makin...
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 ...
Under what circumstances would you consider low-dose radiation therapy for osteoarthritis in an older adult patient?
Here is a recent expert consensus by Joel Block on the use of low-dose radiation therapy in OA: Some highlights: "Placebo-controlled randomized clinical trials have now been reported using LDRT for OA of the knees and of the hands. Taken together, they do not show benefit beyond placebo... While a d...
Would you offer re-irradiation LDRT for someone with osteoarthritis or tendinitis if symptoms recur?
I have not personally offered a patient a third round of LDRT and do not know of any data that shows efficacy. However, I might offer a third round if a particular patient got adequate results with the first two and there was some separation in time (perhaps >1 year) since the last round.
How do you approach management autoimmune lymphoproliferative syndrome (ALPS) complicated by HLH?
HLH may respond to Gamifant and Anakinra - monitor CXCL19 cytokine.
In the treatment of osteoarthritis with low-dose radiation therapy is there data to support the claim that LDRT does not limit or preclude later orthopedic surgery?
At LDRT doses, the biological effects are anti-inflammatory and immunomodulatory rather than cytotoxic or fibrogenic, and there is no evidence of vascular injury, impaired cellular proliferation, or tissue destruction. Animal models and cellular studies provide robust evidence that LDRT at OA releva...