Before revision:  Specifically, we model the interaction between cells in the proximal tubule of the kidney and free light chains produced by the myeloma monoclonal protein .
After revision:  Specifically, we model the interaction between cells in the proximal tubule of the kidney and free light chains , renal fibroblasts, and myeloma cells. We analyze the model for steady-state solutions to find a mathematically and biologically relevant stable steady-state solution. This foundational model provides a representation of dynamics between key populations in tubulointerstitial fibrosis that demonstrates how these populations interact to affect patient prognosis in patients with MM and renal impairment .