A Trial to Investigate Long Term Efficacy and Safety of Lonapegsomatropin in Adults With Growth Hormone Deficiency

Inclusion Criteria:

• Signing of the trial specific informed consent

• Completion of the treatment period and Visit 7 assessments of trial TCH-306,including collection and upload of Visit 7 DXA scan

• Fundoscopy at Visit 7 in trial TCH-306 without signs/symptoms of intracranialhypertension or diabetic retinopathy stage 2 / moderate or above

Exclusion Criteria:

• Diabetes mellitus if any of the following are met:

1. Poorly controlled diabetes, defined as HbA1C higher than 7.5% according tocentral laboratory at Visit 6 in trial TCH-306

2. Use of diabetes mellitus drugs other than metformin and/or dipeptidylpeptidase-4 (DPP-4) inhibitors

• Active malignant disease or history of malignancy. Exceptions are:

1. Resection of in situ carcinoma of the cervix uteri

2. Complete eradication of squamous cell or basal cell carcinoma of the skin

• Known history of hypersensitivity and/or idiosyncrasy to the investigational product (somatropin or excipients)

• Female who is pregnant, plans to become pregnant, or is breastfeeding

• Female participant of childbearing potential (i.e., fertile, following menarche anduntil becoming post-menopausal unless permanently sterile) not willing throughoutthe trial to use contraceptives as required by local law or practice. Detailsincluded in Appendix 4/section 10.4 of the protocol

• Male participant not willing throughout the trial to use contraceptives as requiredby local law or practice. Details included in Appendix 4/ section 10.4 of theprotocol

• Any disease or condition that, in the judgement of the investigator, may make theparticipant unlikely to comply with the requirements of the protocol or anycondition that presents undue risk from the investigational product or trialprocedures