=Spark Therapeutics (ONCE) reported earnings on Wed 2 Aug 2017 (b/o)

PHILADELPHIA (AP) _ Spark Therapeutics Inc. (ONCE) on Wednesday reported a loss of $74.4 million in its second quarter.

On a per-share basis, the Philadelphia-based company said it had a loss of $2.40. Losses, adjusted for asset impairment costs, came to $1.89 per share.

The results fell short of Wall Street expectations. The average estimate of eight analysts surveyed by Zacks Investment Research was for a loss of $1.75 per share.

The gene therapy developer posted revenue of $1.5 million in the period, topping Street forecasts. Five analysts surveyed by Zacks expected $1.3 million.

Spark Therapeutics shares have climbed 33 percent since the beginning of the year. The stock has risen 13 percent in the last 12 months.