<prompt> Pitolisant is approved for treatment ofTenosynol giant cell tumorExcessive day time sleepiness in patients with narcolepsyPolyneuropathy due to transthyretin amyloidosisPrimary myelofibrosis  <response>: Pitolisant is a new drug approved for treatment of excessive day time sleepiness in patients with narcolepsy. It acts as inverse agonist of H3 receptors of histamine. New drugs recently approved for conditions mentioned in options are: Tenosynol giant cell tumor: Pexidainib Polyneuropathy in transthyretin amyloidosis: Tafamidis meglumine Primary and secondary myelofibrosis: Fedratinib 