Thalassaemia

D3_THALASSAEMIA

Thalassemia: An inherited blood disorder characterized by a decreased synthesis of one of the polypeptide chains that form hemoglobin. Anemia results from this abnormal hemoglobin formation.

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Endpoint definition

Endpoint definition steps

FinnGen

Phenotype data

520210

1. Apply sex-specific rule

None

520210

2. Check conditions

None

520210

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

Registry filters:

  • Hospital discharge: ICD-10 D56
  • Cause of death: ICD-10 D56

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

-

4. Check minimum number of events

None

-

5. Include endpoints

132

6. Filter based on genotype QC (FinnGen only)

132

Control definitions (FinnGen only)

Control exclude
D3_HAEMOLYTICANAEMIA

Extra metadata

Level in the ICD hierarchy
3
First used in FinnGen datafreeze
DF2
Parent code in ICD-10
D55-D59
Name in latin
Thalassaemia

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 2202 1071 915
Only index persons 1582 880 702
Unadjusted period prevalence (%)
Whole population 0.05 0.03 0.03
Only index persons 0.03 0.03 0.03
Median age at first event (years)
Whole population 22.71 25.67 17.00
Only index persons 28.37 29.61 26.82

-FinnGen-

Key figures

All Female Male
Number of individuals 132 79 53
Unadjusted period prevalence (%) 0.03 0.03 0.02
Median age at first event (years) 35.73 32.21 40.98

-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

No data

CodeWAS (R11)

CodeWAS is a tool for exploring the associations between an endpoint and all of the medical codes and drug codes.

This is a new tool, please reach out using the contact form for feedback and improvement ideas.

First, a cohort is built by matching controls to the endpoint cases using year of birth and sex. Then, a Fisher test is done for all the medical codes and drug codes between the cases and controls of this cohort. Codes are reported in the table below if they have −log10(p-value) ≥ 6.

Matched cohort

Matched cases
123
Matched controls
1228
Code
Vocabulary
Description
Odds Ratio
-log10(p)
N matched cases
N matched controls
D56.0
ICD-10 Finland
Alpha thalassaemia
+∞
38.6
35
*
D56.3
ICD-10 Finland
Thalassaemia trait
+∞
32.8
30
*
D56.1
ICD-10 Finland
Beta thalassaemia
+∞
29.3
27
*
D56.99
ICD-10 Finland
Thalassaemia, unspecified
+∞
28.2
26
*
D56.91
ICD-10 Finland
Thalassemia minor
+∞
27.1
25
*
D56.2
ICD-10 Finland
Delta-beta thalassaemia
+∞
12.7
12
*
O99.0
ICD-10 Finland
Anaemia complicating pregnancy, childbirth and the puerperium
28.8
10.0
13
5
Z31.5
ICD-10 Finland
Genetic counselling
7.0
9.7
24
41
D64.9
ICD-10 Finland
Anaemia, unspecified
6.3
9.3
25
48
R5430
NOMESCO Finland
Interpreter's services
96.4
8.5
9
*
WW500
NOMESCO Finland
Blood transfusion
10.5
8.0
15
16
D01
ICPC
Abdominal pain/cramps general
4.3
7.8
30
86
D50.9
ICD-10 Finland
Iron deficiency anaemia, unspecified
7.1
7.6
18
29
D56
ICD-10 Finland
Thalassaemia
+∞
7.4
7
*
D56.8
ICD-10 Finland
Other thalassaemias
+∞
7.4
7
*
A02BD07
ATC
lansoprazole, amoxicillin and clarithromycin; systemic
9.5
6.7
13
15
ACC59
NOMESCO Finland
Decompression and freeing of adhesions of peripheral nerve: other or unspecified
10.9
6.7
12
12

Mortality – FinRegistry

Association

Association between endpoint D3_THALASSAEMIA and mortality.

Females

Parameter HR [95% CI] p-value
D3_THALASSAEMIA 1.665 [1.07, 2.6] 0.025
Birth year 0.996 [0.99, 1.0] 0.362

During the follow-up period (1.1.1998 — 31.12.2019), 55 out of 893 females with D3_THALASSAEMIA died.

Males

Parameter HR [95% CI] p-value
D3_THALASSAEMIA 1.673 [1.12, 2.49] 0.011
Birth year 0.989 [0.98, 1.0] 0.034

During the follow-up period (1.1.1998 — 31.12.2019), 56 out of 775 males with D3_THALASSAEMIA died.

Mortality risk

Mortality risk for people of age

years, who have D3_THALASSAEMIA.

N-year risk Females Males
1 0.131% 0.315%
5 0.927% 2.064%
10 2.551% 5.115%
15 4.743% 9.437%
20 8.614% 16.314%

Relationships between endpoints

Index endpoint: D3_THALASSAEMIA – Thalassaemia

GWS hits: -

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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