Based on the provided abstracts, I cannot generate a gene function summary for CGA (glycoprotein hormones, alpha polypeptide) because none of the PubMed abstracts discuss this gene. All abstracts focus on chlorogenic acid (CGA), a plant-derived phenolic compound with antioxidant properties, which is unrelated to the glycoprotein hormone gene. The UniProt description indicates that the CGA gene encodes the shared alpha chain of heterodimeric glycoprotein hormones including TSH, LH, FSH, and hCG, which bind to G protein-coupled receptors to activate downstream signaling pathways. However, without relevant research abstracts about the actual gene, I cannot provide evidence-based claims about its specific molecular mechanisms, disease associations, or clinical significance. To generate an accurate gene function summary, abstracts specifically investigating the glycoprotein hormones alpha polypeptide gene would be required.