Does high DNA methylation pattern intratumoral diversity imply weak selection in many human colorectal cancers?
The many hitchhiking passenger variants observed in primary and metastatic CRC cell populations are consistent with relatively old populations, suggesting that clonal evolution leading to selective sweeps may be rare after transformation. Selection in human cancers appears to be a weaker than presumed force after transformation, consistent with the observed rarity of driver mutations in cancer genomes. Phenotypic plasticity rather than the stepwise acquisition of new driver mutations may better account for the many different phenotypes within human tumors.
The rate of COH AMH decline was associated with ovarian reserve testing, oocyte yield, embryo progression, and clinical pregnancy rates, particularly in women older than 35 years. These results suggest that dynamic AMH levels may provide a novel intracycle approach to predict response and treatment outcomes after IVF.