| Source | Estimate | Scope | Credibility |
|---|
| SeekingAlpha[5] | $400 million | US only, 2L EGFR-mutant NSCLC | High - Robust analytical breakdown from a reputable source |
| Goldman Sachs, cited by Allmind[6] and The Bamboo Works[7] | $53 billion | Global, multi-indication across oncology; peak sales year estimated as 2041 | High - Assuming proper attribution, analysis comes from a prestigious investment bank |
| Clinical Trials Arena / GlobalData[8], also cited by MedPath[9] | $1.7 billion | Global, not defined as peak sales but as a 2030 sales estimate | High - Figure cited multiple times and generated from an industry trusted pharma intelligence source |
| Evaluate Pharma, cited by FierceBiotech[10] | $8.5 billion | Geography not specified; figure is an estimate for 2032, not defined as the peak sales year | High - Figure generated by an established competitive intelligence firm and cited by a very reputable pharma news source |
| SimplyWall St[11] | $3.1 billion | Not a peak sales estimate but a 2029 revenue estimate (approximately 2 years after launch); assumed global sales | High - Reputable data aggregator, citing a financial analyst estimate figure, although the analyst group is not specified |
| KoalaGains[12] | $4-6 billion | Unspecified | Low - Not a well established source, with no citation or methodology provided |
| Sahm[13] | $70 billion | Unspecified; assume global cumulative sales | Low - Appears to be a well established firm in Saudi Arabia, but global credibility could not be determined |
| Options Cafe[14] | $4.7 billion | Consensus revenue estimate, not peak sales; geographic scope unspecified | Low - Not a well established source, with no citation or methodology provided on the estimate |
Across the estimates generated above, SeekingAlpha's analysis appears to be the most robust, with a full breakdown of their risk-adjusted Net Present Value Model (rNPV). This estimate however only covers the first narrow indication that ivonescimab is pursuing, whereas at the time of peak sales the therapy is likely to have broader NSCLC approval as well as expansions into numerous oncology indications given its breakthrough clinical outcomes.
Note: Most, if not all, global estimates are based on Summit Therapeutics' revenue potential for ivonescimab. This excludes China-based revenue, the commercial rights to which belong to Akeso, the original developer of the therapy. The Chinese market tends to account for 5% of global revenue for therapies.[39]
Model Schematic
Below is a conceptual breakdown of how the model arrives at its peak annual sales estimates.
Eligible Patient Population
{
NSCLC Incidence
×
Nonsquamous Rate
×
EGFR Positive Rate
×
Advanced / Metastatic Rate
×
TKIs as 1L Received Rate
×
2L Treatment Rate
For the base case of the model, broad NSCLC approval is assumed, so all other subtype filters are turned off in the calculation.
×
Cost of Treatment
{
Avg Annual NSCLC Treatment Cost
×
Avg GTN Ratio Oncology
×
Avg Duration of Ivonescimab Treatment
×
Anticipated Market Share
→
US Peak Sales
÷
US : Global Revenue Ratio
→
Global Peak Sales
Annual Peak Sales Estimation Model
The model below estimates peak sales for ivonescimab in the US and globally. While ivonescimab's first target indication is narrow (treatment of patients with EGFR-mutated, locally advanced or metastatic nonsquamous NSCLC whose disease has progressed after third-generation tyrosine kinase inhibitor (TKI) therapy), approval in NSCLC is likely to be much broader by the time of peak sales. Thus, the model's default parameters have been set to a broad NSCLC approval which is very probable given the superiority in clinical data versus current SOC pembrolizumab.
However, NSCLC patient subtype parameters in the model can be toggled on and off to generate peak sales estimates for varying degrees of indication expansion within NSCLC.
Scenario Analysis: Indication Expansion
While the model estimates peak annual sales based on ivonescimab's approval in NSCLC, the potential breakthrough therapy is likely to expand into other relevant cancer types. There is an extensive set of clinical trials currently underway for ivonescimab, clearly suggesting Summit's plans for rapid multi-indication expansion.
Summit has additional phase 3 trials planned or underway in Colorectal, Pancreatic, and Squamous Cell Carcinoma Head and Neck cancers.[34] There are nearly 100 additional phase 2 trials also underway or planned, most of them based in the US, which are studying Endometrial / Cervical, Glioblastoma, Renal Cell Carcinoma, Breast, Esophageal Squamous Cell Carcinoma, Small Cell Lung, Solid Tumor, Ovarian, and Thymic cancers, along with at least six other cancer types not listed here.[35]
Due to the high likelihood of the therapy having multiple indications on-label at the time of peak sales, below are various plausible indication expansion scenario analyses for ivonescimab.
| Scenario | Label | Rationale | Peak Annual Sales Estimate |
|---|
| Extremely conservative | Narrow NSCLC approval based on the current FDA submission (EGFR-mutated, adv / mets nonsquamous NSCLC, progressed after TKI) | While this is a highly unlikely scenario, it represents the peak sales potential that is closest to being realized based on the current BLA application with the FDA. | US $129.3M / Global $219.1M (to replicate this estimate, check all five NSCLC subtype filters in the calculator) |
| Conservative | Broad NSCLC approval, including all subtypes and lines of therapy | Broad NSCLC approval is highly probable given the therapy's promising clinical outcomes in NSCLC and against SOC. | US $6.49B / Global $11.00B (this is the model's default state, with all NSCLC subtype filters unchecked) |
| Cautiously optimistic | NSCLC and Colorectal, Pancreatic, SCCHN approvals | These cancer types are all in phase 3 ivonescimab trials and most likely to receive FDA approval by the time of peak sales. | US $10.72B / Global $18.16B |
| Optimistic* | Approvals in 20 distinct cancer types | Keytruda currently has FDA approval in 20+ distinct cancers, serving as the benchmark for an optimistic peak sales indication expansion scenario. | US $33.26B / Global $56.37B |
*For the optimistic scenario, 19 additional indications were used to calculate the multiplier, on top of NSCLC itself, for a total of 20 distinct cancer types, matching a rough estimate of the number of cancer types where Keytruda is on-label (not to be confused with 40+ specific indication approvals across these 20+ cancer types).[38] Keytruda has not yet reached peak sales, making its current indication breadth a reasonable directional benchmark for ivonescimab's optimistic, most bullish long-term scenario.
Calculation Methodology and Assumptions
While the extremely conservative and conservative scenario estimates can be generated from the model above, the cautiously optimistic and optimistic peak sales estimates were calculated using a simplified, high-level approach to estimate additional revenue in indications beyond NSCLC.
The NSCLC incidence (176,645) was compared to the average incidence amongst a broad list of 29 different prominent cancer types in the US (38,349), generating a comparison ratio of 0.22.[36] (For more details on how this average incidence value was generated, see Appendix A Dropdown below.)
For each additional cancer type in the cautiously optimistic (n=3) and optimistic (n=19) scenarios, 22% of ivonescimab's revenue in NSCLC was added to the existing NSCLC-driven revenue.
The diagram below illustrates this calculation for the two optimistic scenarios:
Optimistic Peak Sales
=
NSCLC-Driven Revenue
+
nΣ
[
(
Avg Incidence of Expansion Indications
÷
Incidence of NSCLC
)
×
NSCLC-Driven Revenue
]
These estimates where NSCLC drives a disproportionately high portion of the revenue fall in line with Keytruda's revenue distribution, for which roughly $12 billion of the therapy's $30 billion in 2025 sales (39.7%) came from NSCLC treatment.[37] This comparison of Keytruda to Ivonescimab NSCLC revenue is apt given the indication is targeted early in both drugs' life cycles (second approval for Keytruda and likely first for Ivonescimab).
Below are additional assumptions made in these calculations:
- Ivonescimab becomes the frontline standard of care in each expansion indication, similar to how it is in the base case model for NSCLC.
- Market share is assumed to be constant across the cancer types, which is going to overestimate peak sales, since at the time of peak sales, uptake in more recently approved indications is likely to be less saturated than in earlier approved indications, meaning the same level of market share as NSCLC would be difficult to achieve.
- Eligibility across patient subtypes in each of these cancers was also assumed to be broad for simplicity, even though that is likely not to be the case across all of these cancers, even if it ends up being so in NSCLC. This also leads to an overestimation.
Overall, these two scenarios are very likely to be overestimates, and mainly serve to provide directional insight into annual revenue potential if Keytruda-like indication expansion is achieved.
Appendix A: Average Oncology Incidence Calculation
In order to generate an average cancer incidence value, the following data from the American Cancer Society's Cancer Facts and Figures 2026 report was used:[36]
| Cancer Type | Incidence Rate |
|---|
| Tongue | 20,420 |
| Mouth | 15,810 |
| Pharynx | 21,760 |
| Other oral cavity | 2,490 |
| Esophagus | 22,530 |
| Stomach | 31,510 |
| Small intestine | 14,450 |
| Colon | 108,860 |
| Rectum | 49,990 |
| Anus, anal canal, & anorectum | 11,270 |
| Liver & intrahepatic bile duct | 42,340 |
| Gallbladder & other biliary | 12,640 |
| Pancreas | 67,530 |
| Other digestive organs | 8,850 |
| Larynx | 12,290 |
| Lung & bronchus | 229,410 |
| Other respiratory organs | 6,120 |
| Bones & joints | 4,110 |
| Soft tissue (including heart) | 13,910 |
| Melanoma of the skin | 112,000 |
| Other nonepithelial skin | 7,750 |
| Breast | 324,580 |
| Uterine cervix | 13,490 |
| Uterine corpus | 68,270 |
| Ovary | 21,010 |
| Vulva | 7,130 |
| Vagina & other genital, female | 7,760 |
| Prostate | 333,830 |
| Testis | 9,810 |
| Penis & other genital, male | 2,260 |
| Urinary bladder | 84,530 |
| Kidney & renal pelvis | 80,450 |
| Ureter & other urinary organs | 4,720 |
| Eye & orbit | 3,200 |
| Brain & other nervous system | 24,740 |
| Thyroid | 45,240 |
| Other endocrine | 7,960 |
| Hodgkin lymphoma | 8,920 |
| Non-Hodgkin lymphoma | 79,320 |
| Myeloma | 36,000 |
| Acute lymphocytic leukemia | 6,250 |
| Chronic lymphocytic leukemia | 22,760 |
| Acute myeloid leukemia | 22,720 |
| Chronic myeloid leukemia | 9,650 |
| Other leukemia | 6,410 |
| Other & unspecified primary sites | 67,800 |
| Sum (n = 46) | 2,114,850 |
| Average | 45,975 |
Certain cancers listed in this table were grouped together to form meaningful cancer type categories, generating the modified table below.
| Cancer Type | Incidence Rate |
|---|
| Colorectal | 158,850 |
| Melanoma of the skin | 112,000 |
| Urothelial (bladder + ureter) | 89,250 |
| Kidney / renal pelvis | 80,450 |
| Non-Hodgkin lymphoma | 79,320 |
| Head & neck SCC | 72,770 |
| Uterine corpus | 68,270 |
| Pancreas | 67,530 |
| Thyroid | 45,240 |
| Liver & intrahepatic bile duct | 42,340 |
| Myeloma | 36,000 |
| Stomach | 31,510 |
| Brain & other CNS | 24,740 |
| CLL | 22,760 |
| AML | 22,720 |
| Esophagus | 22,530 |
| Ovary | 21,010 |
| Small intestine | 14,450 |
| Soft tissue sarcoma | 13,910 |
| Uterine cervix | 13,490 |
| Gallbladder & other biliary | 12,640 |
| Anus | 11,270 |
| Testis | 9,810 |
| CML | 9,650 |
| Hodgkin lymphoma | 8,920 |
| Vulva | 7,130 |
| ALL | 6,250 |
| Bones & joints | 4,110 |
| Eye & orbit | 3,200 |
| Sum (n = 29) | 1,112,120 |
| Average | 38,349 |
| Median | 22,720 |
These incidence rates were averaged to yield the value 38,349.
Prostate, breast, and lung cancer were excluded from the average calculation. These three cancers drive the highest incidence rates in the US and would have disproportionately skewed the average too high. Most of ivonescimab's indication expansions will be in these lower-incidence cancer types. While the drug is also being tested in trials that include breast and prostate cancer, the breadth of market penetration in those indications likely will never reach that of NSCLC, further justifying their exclusion from the average calculation.
Scenario Analysis: Market Share Sensitivity
Market share is the model parameter with the highest amount of uncertainty, given the multitude of factors that impact a novel therapeutic's uptake and physician adoption. Due to the high variability that can be expected, below are the conservative and optimistic cases alongside the default base case presented in the model.
| Scenario | Market Share Value | Annual Peak Sales Estimate |
|---|
| Conservative | 20% | US $3.71B / Global $6.28B |
| Base Case | 35% | US $6.49B / Global $11.00B |
| Optimistic | 50% | US $9.27B / Global $15.71B |
Ivonescimab's clinical data suggests it has the potential to be Keytruda's incumbent across much of the oncology treatment landscape. Peak sales estimates rely on and fall in line with the actualized revenue that Keytruda has experienced over the last decade, with some of the more optimistic bull cases suggesting even higher annual revenue figures. Ivonescimab has all the makings to be a bispecfic blockbuster therapy, building upon the innovation of first generation checkpoint inhibitor therapies and further improving survival outcomes for patients suffering from deadly malignancies.