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Skin irritation / corrosion

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Administrative data

Endpoint:
skin irritation: in vivo
Type of information:
experimental study
Adequacy of study:
key study
Study period:
22nd September 2015 - 2nd October 2015
Reliability:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
guideline study

Data source

Reference
Reference Type:
study report
Title:
Unnamed
Year:
2015
Report date:
2015

Materials and methods

Test guidelineopen allclose all
Qualifier:
according to guideline
Guideline:
OECD Guideline 404 (Acute Dermal Irritation / Corrosion)
Deviations:
no
Qualifier:
according to guideline
Guideline:
EU Method B.4 (Acute Toxicity: Dermal Irritation / Corrosion)
Deviations:
no
Qualifier:
according to guideline
Guideline:
EPA OPPTS 870.2500 (Acute Dermal Irritation)
Deviations:
no
GLP compliance:
yes

Test material

Constituent 1
Chemical structure
Reference substance name:
Methyl (1R,3S,4R,5R)-3-amino-5-({2,4,6-tri-O-benzoyl-3-O-[(2S)-1-(benzyloxy)-3-cyclohexyl-1-oxopropan-2-yl]-β-D-galactopyranosyl}oxy)-4-[(2,3,4-tri-O-benzyl-6-deoxy-α -L-galactopyranosyl)oxy]cyclohexanecarboxylate hydrochloride
EC Number:
945-311-0
Molecular formula:
C78H85NO18 HCl
IUPAC Name:
Methyl (1R,3S,4R,5R)-3-amino-5-({2,4,6-tri-O-benzoyl-3-O-[(2S)-1-(benzyloxy)-3-cyclohexyl-1-oxopropan-2-yl]-β-D-galactopyranosyl}oxy)-4-[(2,3,4-tri-O-benzyl-6-deoxy-α -L-galactopyranosyl)oxy]cyclohexanecarboxylate hydrochloride
Details on test material:
- State of aggregation: white solid powder
Specific details on test material used for the study:
Identification: PF-06460259-01
Appearance: White powder
Batch: E010016142
Purity/Composition: 93.7%
Test substance storage: At room temperature
Stable under storage conditions until: 31 March 2016 (expiry date)

Test animals

Species:
rabbit
Strain:
New Zealand White
Details on test animals or test system and environmental conditions:
Species: Albino rabbit, New Zealand White, (SPF-Quality). Recognized by international guidelines as the recommended test system (e.g. EC, OECD)
Source: Charles River France, L’ArbresleCedex, France
Number of animals: 3 Males.
Age and body weight: At start of dosing, the animals were between 12 and 24 weeks old and body weights were at least 1.5 kg.
Identification: Earmark.
Health inspection: At least prior to dosing. It was ensured that the animals were healthy and that the skin to be treated was intact and free from any abnormality.

Test system

Type of coverage:
semiocclusive
Preparation of test site:
clipped
Vehicle:
water
Amount / concentration applied:
Each animal was treated by dermal application of 0.5 grams of the test item. The test item was moistened with 0.5 mL of the vehicle
Duration of treatment / exposure:
Each animal was treated by dermal application of 0.5 grams of the test item to the healthy intact, clipped skin of one flank using a Metalline patch of 2x3 cm. The patch was mounted on Micropore tape, which was wrapped around the abdomen and secured with Coban elastic bandage. Four hours after the application, the dressing was removed and the skin cleaned of residual test item.
Observation period:
Mortality/Viability: Twice daily
Toxicity: At least once daily
Body Weight: Day of treatment (prior to application) and on the day of the final observation.
Irritation: The skin reactions were assessed at approximately 1, 24, 48 and 72 hours after the removal of the dressings and test item. The irritation scores and a description of all other (local) effects were recorded. Adjacent areas of the untreated skin of each animal served as controls.
Number of animals:
Three males
Details on study design:
The study was performed in a stepwise manner and was started by treatment of a single rabbit (sentinel). The two other animals were treated in a similar manner one week later, after considering the degree of skin irritation observed in the first animal.


Approximately 24 hours before treatment, the dorsal fur was clipped with electric clippers, exposing an area of approximately 150 square centimeters (10x15 cm). To facilitate scoring, treated skin areas were re-clipped at least 3 hours before the observations.

Each animal was treated by dermal application of 0.5 grams of the test item. The test item was moistened with 0.5 mL of the vehicle and applied to the skin of one flank, using a metalline patch of 2x3 cm. The patch was mounted on Micropore tape#, which was wrapped around the abdomen and secured with Coban elastic bandage.

Four hours after the application, the dressing was removed and the skin cleaned of residual test item using tap water.

Results and discussion

In vivo

Resultsopen allclose all
Irritation parameter:
erythema score
Basis:
animal #1
Time point:
other: 1 hour
Score:
ca. 0
Max. score:
4
Irritation parameter:
erythema score
Basis:
animal #1
Time point:
24 h
Score:
ca. 0
Max. score:
4
Irritation parameter:
erythema score
Basis:
animal #1
Time point:
48 h
Score:
ca. 0
Max. score:
4
Irritation parameter:
erythema score
Basis:
animal #1
Time point:
72 h
Score:
ca. 0
Max. score:
4
Irritation parameter:
edema score
Basis:
animal #1
Time point:
other: 1 hour
Score:
ca. 0
Max. score:
4
Irritation parameter:
edema score
Basis:
animal #1
Time point:
24 h
Score:
ca. 0
Max. score:
4
Irritation parameter:
edema score
Basis:
animal #1
Time point:
48 h
Score:
ca. 0
Max. score:
4
Irritation parameter:
edema score
Basis:
animal #1
Time point:
72 h
Score:
ca. 0
Max. score:
4
Irritation parameter:
erythema score
Basis:
animal #2
Time point:
other: 1 hour
Score:
ca. 0
Max. score:
4
Irritation parameter:
erythema score
Basis:
animal #2
Time point:
24 h
Score:
ca. 0
Max. score:
4
Irritation parameter:
erythema score
Basis:
animal #2
Time point:
48 h
Score:
ca. 0
Max. score:
4
Irritation parameter:
erythema score
Basis:
animal #2
Time point:
72 h
Score:
ca. 0
Max. score:
4
Irritation parameter:
edema score
Basis:
animal #2
Time point:
other: 1 hour
Score:
ca. 0
Max. score:
4
Irritation parameter:
edema score
Basis:
animal #2
Time point:
24 h
Score:
ca. 0
Max. score:
4
Irritation parameter:
edema score
Basis:
animal #2
Time point:
48 h
Score:
ca. 0
Max. score:
4
Irritation parameter:
edema score
Basis:
animal #2
Time point:
72 h
Score:
ca. 0
Max. score:
4
Irritation parameter:
erythema score
Basis:
animal #3
Time point:
other: 1 hour
Score:
ca. 0
Max. score:
4
Irritation parameter:
erythema score
Basis:
animal #3
Time point:
24 h
Score:
ca. 0
Max. score:
4
Irritation parameter:
erythema score
Basis:
animal #3
Time point:
48 h
Score:
ca. 0
Max. score:
4
Irritation parameter:
erythema score
Basis:
animal #3
Time point:
72 h
Score:
ca. 0
Max. score:
4
Irritation parameter:
edema score
Basis:
animal #3
Time point:
other: 1 hour
Score:
ca. 0
Max. score:
4
Irritation parameter:
edema score
Basis:
animal #3
Time point:
24 h
Score:
ca. 0
Max. score:
4
Irritation parameter:
edema score
Basis:
animal #3
Time point:
48 h
Score:
ca. 0
Max. score:
4
Irritation parameter:
edema score
Basis:
animal #3
Time point:
72 h
Score:
ca. 0
Max. score:
4

Any other information on results incl. tables

No skin irritation was caused by 4 hours exposure to PF-06460259-01. No staining of the treated skin by the test item was observed and no test item remnants were seen. No signs of systemic toxicity were observed in the animals during the test period and no mortality occurred.

Applicant's summary and conclusion

Interpretation of results:
GHS criteria not met
Conclusions:
Based on these resultsPF-06460259-01 does not have to be classified and has no obligatory labelling requirement for skin irritation according to the:
- Globally Harmonized System of Classification and Labelling of Chemicals (GHS) of the United
Nations (2011) (including all amendments),
- Regulation (EC) No 1272/2008 on classification, labelling and packaging of items and mixtures
(including all amendments)
Executive summary:

Primary skin irritation/corrosion study with PF-06460259-01 in the rabbit (4-hoursemi-occlusive application).

The study was carried out based on the guidelines described in:

OECD No.404, "Acute Dermal Irritation/Corrosion" (2002)

EC, No 440/2008; B4: "Acute Toxicity: Dermal Irritation/Corrosion"

US EPA, OPPTS 870.2500 (1998), Acute Dermal Irritation

JMAFF Guidelines (2000), including the most recent revisions.

Three rabbits were exposed to 0.5 grams of PF-06460259-01, moistened with 50% watery ethanol by application onto clipped skin for 4 hours using asemi-occlusivedressing. Skin reactions were assessed 1, 24, 48 and 72 hours after exposure.

No skin irritation was caused by 4 hours exposure toPF-06460259-01.

Based on these resultsPF-06460259-01 does not have to be classified and has no obligatory labelling requirement for skin irritation according to the: - Globally Harmonized System of Classification and Labelling of Chemicals (GHS) of the United Nations (2011) (including all amendments),

- Regulation (EC) No 1272/2008 on classification, labelling and packaging of items and mixtures (including all amendments).

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