- Before
- Trends Line C2, investigates outliers and answers QA's “which batches?” questions — and spends more time joining tables than understanding the process.
- Now
- Asks in plain words and gets the genealogy, the chart or the cited page, with the query beside it; signs the facts in the draft.
One Monday on Line C2: a supplier recall and a viability outlier
Monday, 6 October, Plant 3 — Leiden. Line C2 makes Corventa, an autologous CAR-T therapy. At 08:42 Northgate Bioreagents recalls a cryomedium lot that is in every frozen dose. Here is what happens next, screen by screen, in the working solution.
- 01Monday morning
The work, not a welcome screen
Lena Ortiz · MSAT process scientistLena's Trace screen opens on the line's live questions: 1,284 batches, 9,412 lots and 642 procedures behind a single question bar. This morning's outlier trace is on the graph, and beside it the supplier notice that has just arrived — NBR-FSN-2026-014, cryomedium lot CRYO-5512 recalled because retained bottles failed a container-closure check.
“Cryomedium lot CRYO-5512 recalled — retained bottles failed a container-closure check; sterility cannot be assured.”
- 02One question
Backward and forward in one walk
Genealogy specialistLena clicks “Trace this lot” and asks which finished batches used CRYO-5512 and where they went. In five steps and 2.5 seconds the genealogy specialist walks back to the three inputs on the supplier's certificate — DMSO, human albumin 5% and bottle lot NB-BT-0390 — and forward to 7 finished batches, CRV-26-0420 to CRV-26-0426, shipped to Germany (3), the Netherlands (2) and the United Kingdom (2).
“3 inputs ← CRYO-5512 → 7 finished batches → 3 markets”
- 03Forward
Five patients infused, two doses still at the centre
Genealogy specialistRelease results and shipments sit on every node. Five doses were infused between 4 and 19 September. Two are in storage at the treatment centre: CRV-26-0426 at St Aldwyn's Hospital, Manchester, infusion due 8 October, and CRV-26-0425 at Klinikum Rheinau, Cologne, due 14 October. All seven passed sterility (no growth) and endotoxin (0.12–0.31 EU/mL against a limit of 1.0). CRV-26-0422 carries a major deviation, DEV-2026-0168.
- 04Backward
A second lot the notice did not name
Genealogy specialistLooking for the same input elsewhere, the walk finds that bottle lot NB-BT-0390 also filled CRYO-5530 — received 22 September, 12 bottles in Leiden's store, none used. A where-used report on CRYO-5512 alone would have missed it.
Lot record: “Bottle lot NB-BT-0390 — the same as the recalled lot · 12 bottles in stock, none used.”
- 05The evidence
The query behind the answer
Lena Ortiz · MSAT process scientistEvery sentence of the answer carries a numbered source: the supplier notice, the material movements, the shipments and chain of custody, the release results and the certificate for CRYO-5530. The Query view shows the read-only walk itself — 31 links walked in 0.6 seconds across genealogy, shipments, lab and supplier certificates.
Links walked: 31 · read time: 0.6 s · marked Read-only.
- 06Next step
The impact assessment, drafted from the trace
Impact and deviation drafterSOP-QA-0112 §5.2 asks for a product impact assessment within 24 hours of a supplier recall. The drafter reads the trace and the 7 batch records and fills IA-2026-0031: exposure, product status, and four proposed actions — quarantine CRYO-5512 (6 bottles) and CRYO-5530 (12), ask both centres to hold the stored doses, tell the treating physicians of the 5 infused patients through medical affairs, and assess notification in each of the 3 markets. Proposed risk: low, because release sterility passed.
“Drafted by an agent from the cited records. Nothing is sent until you sign; the Qualified Person decides every action.”
- 07Signed
Lena signs the facts; the Qualified Person decides
Lena Ortiz · MSAT process scientistLena signs with the meaning “I confirm the facts in this impact assessment are correct”. IA-2026-0031 goes to Omar Haddad, QA · Qualified Person, who decides on the two doses at the centres and on notifying the authorities. On the graph both cryomedium lots now read “To quarantine” and the two stored doses “hold requested”. The 24 hours run to 08:42 on 7 October.
“IA-2026-0031 sent to QA. Signed by Lena Ortiz.”
- 08The same morning
Two harvests below the control limit
Batch data specialistLena's other open question is a trend. Asked for viability at harvest over the last 20 batches, the batch data specialist finds the metric (lab test VIAB-HARV, 7-AAD flow) among 312 columns, runs a read-only query and draws the chart: an 87.6% average, with CRV-26-0431 at 68.9% — under the 70% release limit — and CRV-26-0418 at 72.4%, under the 75% action limit.
Outlier rule shown with the query: below mean − 3σ of the 32 batches before 21 July (83.4%).
- 09One click
The one lot both outliers share
Genealogy specialistOn CRV-26-0431's genealogy, from apheresis to drug product, the specialist compares every raw material lot with the other outlier. One is shared: culture medium MED-24-0917 from Halvern, received at 318 mOsm/kg — the top of its 280–320 range, where the other lots ran 296–302. The same lot is in CRV-26-0436, now in expansion at 81.2% on day 6, with its next feed at 14:00.
“Same supplier, same medium. Lot MED-24-0917 came in at 318 mOsm/kg osmolality — the top of its 280–320 range.”
- 10Before the 14:00 feed
What the procedure asks, page by page
Procedure specialistBelow 75% at harvest is an action-limit excursion. From effective versions only, the procedure specialist cites SOP-MFG-0214 §8.3: tell MSAT and QA within 4 hours, open a deviation the same working day, keep two 1 mL samples at ≤ −150 °C. SOP-MFG-0211 §6.4 asks for a raw material lot review before the next feed. The drafter prepares DEV-2026-0187 with a proposed class of major; Dana Okafor decides the class.
The v8.0 draft of SOP-MFG-0214 is in review — the specialist does not cite it.