The results make UnitedHealth Group’s earnings blowup last month look less and less like a sector-wide problem.

Cigna swung to a first quarter profit of $1.3 billion as the health insurer gains control of rising medical costs and its Evernorth business continues to perform well.

Cigna on Friday raised its full-year earnings forecast and beat estimates for quarterly profit, helped by strong performance in its pharmacy benefit management business and lower-than-expected medical costs in its insurance arm.