Trial Outcomes & Findings for Study to Evaluate the Efficacy and Safety of Deferasirox Film-coated Tablet Versus Phlebotomy in Patients With Hereditary Hemochromatosis (HH) (NCT NCT03203850)

Participants took part in 11 investigative sites in 7 countries.

There was a screening period of 4 weeks to assess participants eligibility.

Study to Evaluate the Efficacy and Safety of Deferasirox Film-coated Tablet Versus Phlebotomy in Patients With Hereditary Hemochromatosis (HH)

Proportion of participants achieving target serum ferritin (SF) ≤ 100 μg/L on or before Month 24. Participants were considered responders if they met response criteria (target SF ≤100 µg/L) on or before Month 24 (Week 104) during the treatment phase. Any participant who discontinued treatment prematurely before meeting such criterion and participants with unknown or missing SF by Month 24 were counted as non-responder.

Number of participants with at least one ocular treatment emergent adverse event (new or worsening from baseline).

Number of participants with at least one ocular treatment emergent adverse event (new or worsening from baseline). Preferred terms are based on Medical Dictionary of Regulatory Activities (MedDRA) version 26.0.

Number of participants with treatment emergent AEs (any AE regardless of seriousness), AEs leading to study treatment discontinuation, and SAEs.

Number of participants with Adverse Events who interrupt deferasirox FCT at least once due to SF level ≤ 100 μg/L and re-initiate therapy at SF level ≥ 300 μg/L. There were no participants that re-initiated therapy when reached 300 ug/L.

Visual acuity was measured using an Early Treatment Diabetic Retinopathy Study (ETDRS) chart. A letter score was calculated based on the number of letters that could correctly be identified from specified distances. For low luminance and standard acuity measures, visual acuity was described on a logMAR scale for all measures. For including acuity obtained with the ETDRS letter score, the values were converted to a logMAR scale, using the following formula: logMAR = 1.7-0.02\*ETDRS score. With this conversion, a difference from baseline of 0.1 logMAR = 5-letter difference in visual acuity, 0.2 logMAR = 10-letter difference, 0.3 logMAR = 15-letter difference, 0.4 logMAR = 20-letter difference, 0.5 logMAR = 25-letter difference and 0.6 logMAR = 30-letter difference. Decrease in logMAR score category from baseline indicates improvement in visual acuity. The best change from baseline amongst all post baseline visit is presented.

Visual acuity was measured using an Early Treatment Diabetic Retinopathy Study (ETDRS) chart. A letter score was calculated based on the number of letters that could correctly be identified from specified distances. For low luminance and standard acuity measures, visual acuity was described on a logMAR scale for all measures. For including acuity obtained with the ETDRS letter score, the values were converted to a logMAR scale, using the following formula: logMAR = 1.7-0.02\*ETDRS score. With this conversion, a difference from baseline of 0.1 logMAR = 5-letter difference in visual acuity, 0.2 logMAR = 10-letter difference, 0.3 logMAR = 15-letter difference, 0.4 logMAR = 20-letter difference, 0.5 logMAR = 25-letter difference and 0.6 logMAR = 30-letter difference. Increase in logMAR score from baseline indicates worsening in visual acuity. The worst change from baseline amongst all post baseline visit is presented.

Intraocular pressure was measured by tonometry. Intraocular pressure values \>5 to ≤21 mmHg were considered normal. The worst post-baseline value corresponds to the worst outcome amongst all post baseline visit

Intraocular pressure was measured by tonometry. A decrease in intraocular pressure from baseline indicated improvement.

Slit lamp examination was used to evaluate lids, cornea, conjunctiva, iris, anterior chamber, aqueous flare, aqueous inflammatory cells and lens. Any post-baseline abnormalities (not present at baseline) in slit lamp examination were assesses by the investigator and classified as insignificant or clinically significant. Number of participants with slit lamp results (normal, insignificant, significant, missing) for any evaluation and worst eye are reported.

Lens Opacities Classification System III (LOCS III) grading scales include lens opacities defined as nuclear opalescence (NO), nuclear color (NC), cortical (C) cataract and posterior subcapsular (P) cataract with several degrees of extend, i.e. severity. The LOCS III scale for nuclear opalescence and for nuclear color ranges from 0 to 6. The LOCS III scale for cortical cataract and posterior subcapsular cataract opacity ranges from 0 to 5. For all scales, higher values indicate higher opacity, opalescence, or color (range: NO0/NC0/C0/P0 to NO6/NC6/C5/P5). Number of participants with an increase from baseline of ≥1 and increase of ≥2 in LOCS III grades is reported.

Fundus oculi examination was used to evaluate peripheral retina, macula, optic nerve, and vitreous hemorrhage. Any post-baseline abnormalities (not present at baseline) in fundus oculi examination were assessed by the investigator and classified as insignificant or clinically significant. Number of participants with fundus oculi results (normal, insignificant, significant, missing) for any evaluation and worst eye are reported.

Time to response (TTR) is defined as the time from the date of randomization to the date of the first time the SF achieved a value ≤ 100 μg/L during the treatment phase. Participants who did not achieve SF ≤ 100 μg/L were censored as follows: at the last serum ferritin assessment date on or before month 24 (week 104), at the day of randomization if a subject does not have any post-baseline serum ferritin value or at the death date. TTR was analyzed using the Kaplan-Meier method.