RPS6KA3 and Miyoshi myopathy: For example, N/TERT-1, immortalized normal cells by over expression of telomerase, HaCaT, a premalignant human skin keratinocyte, SCC-13, a SCC cell, and SK-MEL-28, a MM cell, show endogenous different RSK2 protein levels likely as SK-MEL-28 > SCC-13 > HaCaT > N/TERT-1 (19).