The CHLOE integration brings embryo data from the EmbryoScope time-lapse system into Wawa. Once connected, you can link cycles to CHLOE and sync embryo gradings, scores, and images directly into the embryology record.
1. Setting up
Adding a station
A station is a connection to CHLOE. To set one up:
Go to 'Settings > CHLOE'
Add a new station
Select your region (US, EU, or AU)
Enter your CHLOE username and password
Click 'Test Connection' to verify everything works
Authentication is handled automatically. Once credentials are entered, wawa manages the connection in the background.
Before you start
Before linking a cycle to CHLOE, make sure the cycle has:
An aspiration recorded in wawa
Fertilised embryos — the embryos that will be matched to CHLOE wells must already be marked as fertilised
The sync matches fertilised embryos to wells by position, so these need to exist before you link and sync.
2. Linking a cycle
Once the aspiration and fertilised embryos are in place, you can link the cycle to the corresponding patient and treatment in Chloe.
Open the cycle and go to the CHLOE section
Confirm the patient - wawa shows the patient's name and date of birth from CHLOE so you can verify it's the right person
Choose the treatment - wawa lists all treatments for that patient with their start date and status
Click 'Link'
If anything goes wrong during linking, nothing is saved - you can safely try again!
Syncing embryo data
Once a cycle is linked, you can pull the latest data from CHLOE at any time.
Open the linked cycle and go to the CHLOE section
Click 'Sync'
You can sync as many times as you like. It will always reflect the latest data from CHLOE.
3. What gets synced?
Embryo matching: wawa matches fertilised embryos to CHLOE wells by position. The first fertilised embryo is matched to well 1, the second to well 2, and so on.
Scores and details: for each matched embryo, the sync brings in:
EQ score, blast score, and EQ rank
Morphokinetic events (timed cell division milestones)
DUC1 and degenerated oocyte flags
Fragmentation data
Any manual annotations made in Chloe
Gradings: CHLOE is treated as the source of truth for gradings. Each sync updates them to reflect the latest data, including any AI re-analysis or manual overrides made in CHLOE. The grading types brought in are:
| Grading type | Days |
|--------------|------|
| PN | Day 1 |
| ASEBIR | Days 1–7 |
| Cleavage | Days 2–4 |
| Gardner | Days 5–7 |
Embryo fate: if an embryo's fate hasn't been set manually in wawa, the sync updates it based on the CHLOE well status:
| Chloe status | Wawa fate |
|--------------|-----------|
| Transferred | Transferred |
| Frozen | Cryopreserved |
| Discarded | Discarded |
Images: one image per development day is downloaded from CHLOE and attached to the embryo record.
4. If something goes wrong
If one embryo fails to sync, the rest still complete. The error is logged and can be reviewed in the CHLOE logs (under Settings > CHLOE > Logs).
5. Viewing well details
After syncing, you can view the full CHLOE data for any embryo by clicking on its well detail. This shows:
Overview: EQ score, blast score, rank, and flags
Morphokinetics: Timed events grouped by development day
Images: Downloaded embryo images from each day
6. Unlinking a cycle
If you need to disconnect a cycle from CHLOE:
Open the cycle and go to the CHLOE section
Click 'Unlink'
This removes all synced data:
CHLOE scores and well details
Downloaded images
Gradings are reset to blank
The patient link is kept, so if you re-link the cycle later you won't need to enter the patient ID again!