European shares rose modestly on Friday, with the pan-European STOXX 600 gaining 0.2% to 659.59 points by 0731 GMT and heading for a fourth straight weekly advance. Gains were led by healthcare stocks, which climbed 1.3%, while insurers fell 0.6% after Munich Re dropped 3.7% despite posting a 6% increase in second-quarter net profit, beating expectations for a decline. Brent futures rose to $83.29 a barrel as concerns intensified over the Strait of Hormuz, a vital oil shipping route, after Iran, working with Oman, suggested banning vessels deemed hostile and imposing heavy fines for breaches of the proposed rules. Investors also turned to upcoming U.S. payrolls data for signals on the interest-rate outlook, with July job growth expected to have accelerated, reinforcing the view that the Federal Reserve can keep its focus on inflation. Genmab jumped 7.2% after the cancer drugmaker reported stronger first-half revenue and raised its full-year outlook.