Proteostasis Therapeutics, Inc. announced earnings results for the first quarter ended March 31, 2019. For the first quarter, the company announced sales was USD 5.000 million compared to USD 942,000 a year ago. Operating loss was USD 15.091 million compared to USD 11.281 million a year ago. Net loss was USD 14.418 million compared to USD 11.026 million a year ago. Basic loss per share was USD 0.28 compared to USD 0.32 a year ago.