A "Probability Stratification and Staged Clearance" Strategy for HIV Cure ——A Systematic Protocol Based on Functional Separation Editing of Hematopoietic Stem Cells, Active Latent Reservoir Reduction, and Patient Stratification

Abstract:The fundamental barrier to an HIV cure is not a lack of technical methods, but theprobabilistic nature of viral escape. As long as a single latently infected cell capableof utilizing the CXCR4 co-receptor (X4-tropic) remains in the body, any strategy thatonly blocks the CCR5 pathway is theoretically destined to fail. Based on this coreprobabilistic constraint, this paper proposes a cure strategy founded on patient riskstratification. By systematically analyzing the detection rates and low-frequencyexistence probabilities of X4 quasispecies across different disease stages, this papercategorizes patients into a high-probability cure group (early-stage, pure R5, theoretical success rate >95%), a medium-probability group (mid-stage, successrate approximately 50–70%), and a low-probability group (late-stage, currentstrategy success rate <30%). Differentiated intervention intensities are thenformulated accordingly. The core of the strategy consists of four modules: functionalseparation editing of CCR5 to establish a permanent R5 barrier; a dual-track CXCR4strategy (functional separation editing or long-acting drug blockade) to eliminatethe X4 escape pathway; active latent reservoir reduction cycles to decrease theinfected cell count; and neutralizing viral decoys to provide a terminal safety net. Using a rigorous probability model, this paper demonstrates that for early-stage, promptly treated patients with pure R5 infection, combining CCR5 editing with 3–4cycles of latent reservoir reduction can reduce the failure probability to below theclinically acceptable threshold (<1%). For mid-to-late-stage patients, the success ofCXCR4 editing determines whether they can leap from "exploratory therapy" to"high-probability cure." The value of this paper lies not in claiming to have found auniversal answer, but in being the first to transform the HIV cure challenge from aproblem of empirical medicine into a calculable and stratifiable problem ofprobability management. Keywords: HIV cure; probability stratification; X4 tropism; functional separationediting; latent reservoir reduction; hematopoietic stem cells; risk stratificationThis is a theoretical‑hypothesis paper for academic discussion only. It does notprovide medical advice and shall not be used as clinical guidance for diagnosis ortreatment.