A Registry for Participants With Chronic Hypoparathyroidism

Inclusion Criteria:

• Participants diagnosed with chronic hypoparathyroidism, that is, hypoparathyroidismwith a duration of longer than 6 months, including:

1. Adult participants (greater than or equal to [>=] 18 years of age) who arereceiving for chronic hypoparathyroidism any of the following options: standardtherapy, standard therapy plus rhPTH(1-84), or rhPTH(1-84) therapy alone.

2. Pediatric participants (less than [<] 18 years of age) who are receiving forchronic hypoparathyroidism any of the following options: standard therapy,standard therapy plus rhPTH(1-84), or rhPTH(1-84) therapy alone.

Exclusion Criteria:

• Participants or legally acceptable representatives unable to provide informedconsent.

• Participants using rhPTH(1-34) or who used rhPTH(1-34) for more than 2 years areexcluded. Participants who had been treated with rhPTH(1-34) within 3 months ofenrollment are also excluded as are participants currently using rhPTH(1-34).

FOR US SITES ONLY: Participants treated with rhPTH(1-84) prior to the US recall may use rhPTH(1-34) only while rhPTH(1-84) is unavailable due to the recall.

• Participants currently enrolled in an interventional clinical study (whether or notthe study is related to hypoparathyroidism); note that this does not includeparticipants enrolled in other observational registries.

• History of hypoparathyroidism resulting from impaired responsiveness to PTH (pseudohypoparathyroidism).