Disorders of iron metabolism

E4_IRON_MET

hereditary hemochromatosis type 1: Hemochromatosis type 1 (classic) is the most common form of hereditary hemochromatosis (HH), a group of diseases characterized by excessive tissue iron deposition. Due to its incidence (1/200-1/1000), it is not considered as a rare disease, unlike the other subforms of the disease

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Endpoint definition

Endpoint definition steps

FinnGen

Phenotype data

473681

1. Apply sex-specific rule

None

473681

2. Check conditions

None

473681

3. Check pre-conditions, main-only, mode, registry filters

Registry filters:

  • Hospital discharge: ICD-10 E83.1
  • Hospital discharge: ICD-9 2750
  • Cause of death: ICD-10 E83.1
  • Cause of death: ICD-9 2750

2 out of 7 registries used, show all original rules.

451

4. Check minimum number of events

None

451

5. Include endpoints

None

451

6. Filter based on genotype QC (FinnGen only)

425

Control definitions (FinnGen only)

Control exclude E4_METABOLIA

Extra metadata

Level in the ICD hierarchy 4
First used in FinnGen datafreeze DF2
Parent code in ICD-10 E83
Name in latin Perturbationes metabolismi ferri

Case counts by codes

FinnGen case counts by registry codes:

generic upset plot

Upset plot

Full data table

Summary Statistics

-FinRegistry-

Key figures

All Female Male
Number of individuals
Whole population 2585 1043 1510
Only index persons 2299 965 1334
Unadjusted period prevalence (%)
Whole population 0.04 0.03 0.04
Only index persons 0.04 0.04 0.05
Median age at first event (years)
Whole population 55.61 56.88 54.60
Only index persons 55.33 56.71 54.33

-FinnGen-

Key figures

All Female Male
Number of individuals 425 197 228
Unadjusted period prevalence (%) 0.10 0.08 0.11
Median age at first event (years) 55.26 55.31 55.23

-FinRegistry-

Age distribution of first events

-FinnGen-

Age distribution of first events

-FinRegistry-

Year distribution of first events

-FinnGen-

Year distribution of first events

-FinRegistry-

Cumulative Incidence Function

-FinnGen-

Cumulative Incidence Function

Mortality – FinRegistry

Association

Association between endpoint E4_IRON_MET and mortality.

Females

Parameter HR [95% CI] p-value
E4_IRON_MET 1.819 [1.37, 2.42] < 0.001
Birth year 0.997 [0.99, 1.01] 0.43

During the follow-up period (1.1.1998 — 31.12.2019), 117 out of 700 females with E4_IRON_MET died.

Males

Parameter HR [95% CI] p-value
E4_IRON_MET 2.068 [1.7, 2.51] < 0.001
Birth year 0.988 [0.98, 1.0] 0.012

During the follow-up period (1.1.1998 — 31.12.2019), 233 out of 1047 males with E4_IRON_MET died.

Mortality risk

Mortality risk for people of age

years, who have E4_IRON_MET.

N-year risk Females Males
1 0.185% 0.41%
5 1.129% 2.443%
10 2.835% 6.134%
15 5.252% 11.96%
20 8.954% 19.321%

Relationships between endpoints

Index endpoint: E4_IRON_MET – Disorders of iron metabolism

GWS hits: 3

Endpoint
Case Overlap
Survival Analysis
Genetic Correlations
Genetic Signals
N (Jaccard index)
HR [CI]
Extremity
rg [CI]
Extremity
Hits
Coloc Hits
FinRegistry
FinnGen
FinRegistry
FinnGen
FinnGen
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