Health
Experimental Alzheimer's surgical procedure draws global interest and scientific debate
Connecting neck lymphatics to veins aims to enhance brain waste clearance, but researchers question the surgery's durability, safety, and rapid cognitive effects.
The short version
- A surgical procedure known as deep cervical lymphatic-venous anastomosis (dcLVA) connects neck lymphatic vessels to nearby veins to clear toxic waste from the brain.
- First performed for Alzheimer's in 2020 by Chinese microsurgeon Qingping Xie, the treatment gained viral attention and led thousands of patients to seek the surgery before Chinese regulators restricted it to formal research.
- Global clinical studies are underway to evaluate the procedure, but scientists remain divided over potential risks, rapid turnaround times, and whether cognitive gains will endure long-term.
Key facts
- Deep cervical lymphatic-venous anastomosis (dcLVA) attaches tiny lymphatic vessels in the neck to nearby veins to facilitate fluid and protein clearance from the brain.[Scientific American]
- Microsurgeon Qingping Xie performed the first dcLVA procedure for Alzheimer's disease on an 80-year-old patient in September 2020.[Scientific American]
- Chinese regulators restricted dcLVA to formal clinical research settings after thousands sought the procedure, frequently paying upwards of 200,000 yuan ($30,000).[Scientific American]
- Xie has been detained in China since September for undisclosed reasons.[Scientific American]
- A 15-person study of dcLVA is currently underway in the United States, backed by surgical robotics firm Medical Microinstruments.[Scientific American]
What remains uncertain
- It is unverified whether the cognitive and functional improvements reported after surgery are durable, with some clinicians reporting that patients relapse within a year.[Scientific American]
- Researchers lack a clear biological explanation for how the surgery produces near-immediate cognitive changes in some patients.[Scientific American]
Sources
- Controversial Alzheimer’s surgery is said to reverse symptoms. Here’s what scientists sayScientific American metered