Congenital ichthyosis

Q17_CONGEN_ICHTHYOSIS

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 Q80
  • Cause of death: ICD-10 Q80

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

111

4. Check minimum number of events

None

111

5. Include endpoints

None

111

6. Filter based on genotype QC (FinnGen only)

111

Control definitions (FinnGen only)

Control exclude
Q17_OTHER_CONGEN_MALFO

Extra metadata

Level in the ICD hierarchy
3
First used in FinnGen datafreeze
DF4
Parent code in ICD-10
Q8
Name in latin
Ichthyosis congenita

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 1177 430 744
Only index persons 1017 379 638
Unadjusted period prevalence (%)
Whole population 0.02 0.01 0.02
Only index persons 0.02 0.01 0.02
Median age at first event (years)
Whole population 19.16 24.30 16.03
Only index persons 20.43 25.76 17.26

-FinnGen-

Key figures

All Female Male
Number of individuals 111 56 55
Unadjusted period prevalence (%) 0.02 0.02 0.02
Median age at first event (years) 35.28 38.68 31.82

-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
99
Matched controls
987
Code
Vocabulary
Description
Odds Ratio
-log10(p)
N matched cases
N matched controls
Q80.0
ICD-10 Finland
Ichthyosis vulgaris
+∞
42.8
38
*
Q80.9
ICD-10 Finland
Congenital ichthyosis, unspecified
+∞
39.2
35
*
D02AE01
ATC
carbamide; topical
20.4
29.1
46
40
Q80.8
ICD-10 Finland
Other congenital ichthyosis
+∞
26.2
24
*
E0000UV
ATC
NA
8.4
20.5
76
279
Q80.1
ICD-10 Finland
X-linked ichthyosis
+∞
19.4
18
*
E000006
ATC
NA
16.1
18.7
31
27
Q80.2
ICD-10 Finland
Lamellar ichthyosis
+∞
18.3
17
*
E000001
ATC
NA
6.3
15.5
52
147
75720
ICD-8 Finland
Congenital anomalies of skin, hair and nails, Iethyosis congenita
+∞
12.8
12
*
E000003
ATC
NA
12.1
12.6
23
24
D02AX
ATC
Other emollients and protectives
20.2
11.7
17
10
E000002
ATC
NA
6.0
10.7
32
73
D05BB02
ATC
acitretin; oral
19.3
10.2
15
9
134
Kela drug reimbursment
General erythroderma
61.1
9.9
11
*
TQX10
NOMESCO Finland
Biopsy of skin and subcutaneous tissue
6.1
8.6
24
49
G80.2
ICD-10 Finland
Spastic hemiplegic cerebral palsy
+∞
8.4
8
*
Q80.3
ICD-10 Finland
Congenital bullous ichthyosiform erythroderma
+∞
8.4
8
*
E000007
ATC
NA
8.4
7.5
16
22
D07AB08
ATC
desonide; topical
5.2
7.4
23
54
G80.1
ICD-10 Finland
Spastic diplegic cerebral palsy
74.4
6.5
7
*

Mortality – FinRegistry

Association

Association between endpoint Q17_CONGEN_ICHTHYOSIS and mortality.

Females

Parameter HR [95% CI] p-value
Q17_CONGEN_ICHTHYOSIS 2.725 [1.83, 4.05] < 0.001
Birth year 0.999 [0.99, 1.01] 0.719

During the follow-up period (1.1.1998 — 31.12.2019), 56 out of 389 females with Q17_CONGEN_ICHTHYOSIS died.

Males

Parameter HR [95% CI] p-value
Q17_CONGEN_ICHTHYOSIS 2.096 [1.48, 2.97] < 0.001
Birth year 0.987 [0.98, 1.0] 0.009

During the follow-up period (1.1.1998 — 31.12.2019), 86 out of 677 males with Q17_CONGEN_ICHTHYOSIS died.

Mortality risk

Mortality risk for people of age

years, who have Q17_CONGEN_ICHTHYOSIS.

N-year risk Females Males
1 0.288% 0.393%
5 1.607% 2.023%
10 3.991% 5.884%
15 8.222% 11.596%
20 14.303% 19.161%

Relationships between endpoints

Index endpoint: Q17_CONGEN_ICHTHYOSIS – Congenital ichthyosis

GWS hits: 2

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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