Genes of Interest: CPT1B, TCRA, P2RY11, HCRT
Narcolepsy is a sleep disorder characterized by excessive daytime sleepiness and sudden loss of muscle tone, called cataplexy. While the exact cause of narcolepsy is not yet known, genetic factors may play a role in increasing a person's risk of developing the condition. Studies have shown that certain genes, including CPT1B, TCRA, P2RY11, and HCRT, may be associated with an increased risk of narcolepsy.
CPT1B is a gene that encodes a protein called carnitine palmitoyltransferase 1B, which is involved in the metabolism of fats in the body. A study conducted in 2009 found that individuals with a specific variant of the CPT1B gene had an increased risk of developing narcolepsy.
TCRA is a gene that provides instructions for making a protein called the T-cell receptor alpha chain, which is involved in the immune system's response to foreign substances. A study conducted in 2010 found that individuals with certain variants of the TCRA gene had an increased risk of developing narcolepsy.
P2RY11 is a gene that provides instructions for making a protein called purinergic receptor P2Y11, which is involved in the regulation of the immune system. A study conducted in 2012 found that individuals with certain variants of the P2RY11 gene had an increased risk of developing narcolepsy.
HCRT is a gene that provides instructions for making a protein called hypocretin, which regulates the sleep-wake cycle and appetite. A study conducted in 2009 found that individuals with certain variants of the HCRT gene had an increased risk of developing narcolepsy.