SmartDraw pedigree vs Evagene: generic diagrammer or clinical tool?

Short version. SmartDraw is a general-purpose diagramming product used across flowcharts, org charts, floor plans, engineering schematics, and — among many other use cases — pedigree charts. It is a capable tool for non-clinical pedigrees: dog and cat breeding, hobby family trees, and teaching diagrams. Evagene is a clinical-grade pedigree management platform with standard notation enforcement, an ICD-10 and OMIM disease catalogue, BayesMendel cancer risk models, AI interpretation with bring-your-own-key (BYOK) LLMs, and a full API/MCP/embed surface for clinical integration. For clinical genetics work, the two products are in different categories.

This article is an honest comparison, not a hit piece. SmartDraw does a lot of things well. But pedigree charts that feed clinical decisions have a different bar than pedigree charts that illustrate a blog post about Labrador retrievers, and the aim of this page is to make that distinction clearly so readers can choose appropriately. All SmartDraw claims are drawn from its public pedigree chart maker page as of April 2026.

What's a clinical pedigree tool for, and where do generic diagrammers fit?

A pedigree chart is, at its simplest, a picture of a family. Squares for males, circles for females, lines joining partners and connecting generations, shading to mark who is affected by a condition. That's the visual language, and almost any diagram tool can draw it.

A clinical pedigree tool is doing something different. The diagram is still the surface, but underneath is a structured data model: each individual is an object with a sex, a date of birth, a vital status, a list of diagnosed diseases (each coded against ICD-10 or OMIM), relationships that the software understands as biological parent, spouse, or twin rather than as "line from A to B," and so on. On top of that structured model sit capabilities that purely visual tools cannot offer: risk models that compute a carrier probability or lifetime cancer risk from the family history, notation enforcement that prevents a user from producing an inconsistent or ambiguous diagram, disease ontologies that let a service look up "hereditary diffuse gastric cancer" and get back a standard code and inheritance pattern, clinical reporting that turns the pedigree into a document a clinician can file, and interoperability via GEDCOM, FHIR, API, and webhooks so the pedigree can move between systems without being retyped.

Generic diagrammers like SmartDraw fit at the top of that stack. They give you a canvas, a library of shapes, and good export. If what you need is a picture — to teach, to present, to illustrate, to print for a breeder's pedigree certificate — a generic diagrammer is a reasonable and often excellent choice. If what you need is a clinical artefact that drives risk stratification, testing decisions, and a written report, the tool needs to know what the diagram means, not just what it looks like.

SmartDraw is honest about its positioning. Its pedigree chart page sits alongside hundreds of other diagram types, from Venn diagrams to network topologies. It is sold to a broad business market — Fortune 500 users, Google Workspace integrators, Word and PowerPoint users exporting for presentations. Clinical genetics is not the centre of gravity, and the product is not pretending otherwise.

How the two products position themselves

SmartDraw calls its offering the "world's best way to make a pedigree chart" and emphasises ease of use: pre-built templates with connected shapes, easy commands for adding generations, collaboration via shared folders or email, and export to Word, Excel, PDF, and PowerPoint. It integrates with Google Workspace, advertises a wide installed base across large enterprises, and its pedigree examples span genealogy, animal breeding (feline and canine pedigrees are featured), consumer family trees, and some medical diagrams. Pricing is not disclosed on the pedigree page; a free trial is offered.

Evagene positions itself as clinical-grade pedigree management for precision medicine. The pedigree is the central clinical artefact — drawn fast on a gesture canvas during consultation, annotated from a curated 200-plus disease catalogue coded to ICD-10 and OMIM, analysed by integrated BayesMendel risk models (BRCAPRO, MMRpro, PancPRO) and Mendelian inheritance calculators, interpreted by AI through your own LLM keys, and delivered as one of four clinical report types. On top of that clinical core sits a developer platform: a scoped REST API, HMAC-signed webhooks, an MCP server exposing 11 pedigree tools to AI agents, and an embeddable viewer for patient portals and EHR integration layers.

The headline difference is category. SmartDraw is a diagram tool that can draw pedigrees. Evagene is a clinical pedigree platform that also draws pedigrees beautifully. The overlap is the visual surface; everything beneath the surface is different.

Feature-by-feature comparison

The matrix below compares publicly advertised capabilities. A tick means the feature is on the vendor's public page or documentation; a dash means it is not publicly listed. "—" does not imply it is impossible, only that it is not advertised as a product feature.

Matrix compiled from publicly available product pages and documentation as of April 2026. "—" indicates the capability is not publicly advertised.

Pedigree drawing and symbol enforcement

SmartDraw's pedigree templates are straightforwardly good at what they do. You open a template, you get a layout that already looks like a pedigree, and you edit the boxes and circles to match your family. Its "easy commands" add generations with a keystroke, and the connected-shape engine keeps lines attached when you move a person around. For a breeder producing a canine pedigree certificate or a biology teacher preparing a slide, this is efficient and polished.

What a generic tool cannot do is enforce clinical notation. NSGC (National Society of Genetic Counselors) and ISCN (International System for Human Cytogenomic Nomenclature) set out conventions for clinical pedigrees: how an affected individual is shaded, how a carrier is marked, how a deceased individual is slashed, how twins are indicated, how a terminated pregnancy is drawn, and so on. In a clinical tool, these are rules the software applies automatically based on the underlying data — you record that someone is affected by BRCA1-related breast cancer, and the symbol updates accordingly. In SmartDraw, the square and the shading are separate design elements; nothing stops a user from shading an unaffected symbol, using a circle where a square is required, or leaving a crucial annotation off the chart. For informal use that is fine. For a document that will be filed in a medical record or cited in a screening decision, the lack of enforcement is a source of risk.

Evagene's approach is different. Each individual is a structured object with sex, vital status, date of birth, affected-disease list, and relationships. The symbol is derived from these attributes, not drawn by hand. A user cannot produce an inconsistent pedigree because the rendering layer enforces the notation. That constraint is the point: it means the diagram and the data never drift apart.

The clinical features that don't exist in a generic diagrammer

Once the pedigree is more than a picture, a large set of capabilities opens up that no generic diagram tool offers. The most important for clinical genetics are:

• Hereditary cancer risk models. BRCAPRO estimates BRCA1/2 carrier probability and breast/ovarian cancer risk from the family history; MMRpro does the same for Lynch syndrome genes; PancPRO for pancreatic cancer genes. These are peer-reviewed Bayesian models that require structured family data and cannot be approximated with a diagramming tool. See our overview of hereditary cancer risk assessment.
• Mendelian inheritance calculators. For autosomal dominant, autosomal recessive, and X-linked recessive conditions, the probability of inheriting a variant can be computed from the pedigree topology. A clinical calculator runs these automatically and flags counsellable probabilities.
• Disease ontology. A curated catalogue linking diseases to ICD-10 and OMIM codes means a user can record "Lynch syndrome (OMIM 120435)" as a structured annotation rather than typing free text that downstream systems cannot parse.
• Batch risk screening. For a given proband, screen across all catalogued diseases simultaneously, flagging conditions where family history crosses a clinical threshold. This inverts the usual "clinician suspects, software confirms" workflow into "software flags, clinician reviews."
• Consanguinity detection. Wright's coefficient of inbreeding, computed from pedigree topology, is material for reproductive counselling in consanguineous families and cannot be eyeballed off a SmartDraw chart.
• Clinical reporting. Four distinct report types — family history, risk assessment, AI interpretation, and screening recommendations — designed for inclusion in medical records.
• GEDCOM and 23andMe interoperability. The ability to move structured pedigree data in and out without retyping, via standard formats. GEDCOM 5.5.1 remains the backbone of multi-institution pedigree exchange.

None of these are criticisms of SmartDraw. They are capabilities that are simply outside a diagramming tool's remit. A CAD package is not wrong for failing to run a BRCAPRO calculation; neither is SmartDraw. The point is to know whether your workflow needs them.

When SmartDraw is genuinely the right tool

There are several use cases where SmartDraw (or any capable general diagrammer) is not just acceptable but probably the better choice:

• Breeders and kennels. A pedigree certificate for a Labrador, a racehorse, or a pedigree cat needs to be visually clear, printable, and attractive. It does not need a BayesMendel carrier probability. SmartDraw's templates, presentation-ready formatting, and export to Word and PowerPoint are a better fit than a clinical platform.
• Biology teaching. A slide explaining autosomal dominant inheritance in a secondary-school classroom, or an undergraduate tutorial example, does not need clinical reporting. SmartDraw (or any diagram tool) is appropriate and inexpensive.
• Casual genealogy. Hobbyist family trees, ancestry projects, memoirs. Again, a picture is enough; a clinical platform is overkill.
• Business diagramming generally. If pedigrees are one occasional artefact in a wider design workflow — an illustration in a report, a slide in a pitch deck — SmartDraw's breadth pays off. You do not want to procure a clinical platform for a one-off illustration.
• Visual design handoff. Where the pedigree is an input to a designer or marketing team that will polish the figure for publication, SmartDraw's Office export chain is convenient.

For any of these, the rest of this comparison is academic. Use SmartDraw; it's a good tool.

When a clinical-grade tool is the right call

If any of the following apply, the calculus flips — and the gap between a diagram tool and a clinical platform is not a matter of polish but of category:

• The pedigree informs a real clinical decision — test ordering, screening, surveillance, reproductive counselling, or referral.
• You need hereditary cancer risk assessment with BRCAPRO, MMRpro, or PancPRO, or Mendelian inheritance analysis for monogenic conditions.
• Your documentation needs to be filed in a medical record, cited in referral letters, or included in multidisciplinary team (MDT) meetings.
• You need a structured disease catalogue with ICD-10 and OMIM codes, not free-text annotations that downstream systems cannot parse.
• You operate under data-governance requirements — GDPR, HIPAA, NHS DSP Toolkit, or equivalent — that demand encryption at rest, access controls, and audit logging for genetic family data.
• You want to integrate the pedigree into other systems via REST API, webhooks, FHIR gateway, or an embeddable viewer in a patient portal. See our clinical genetics pedigree tool field guide.
• You are using AI to draft clinical text and need bring-your-own-key LLM support so your sensitive family data does not pass through a vendor-hosted model.
• You import GEDCOM, 23andMe, or legacy pedigree images from other tools and need structured pedigree data at the end of the import.

Where the decision is finely balanced, a practical test is: if your pedigree diagram was printed and handed to a colleague, would they be able to re-enter the data into a different system from the picture alone? In a clinical context, the answer needs to be no — the structured data sits behind the picture and travels with it.

Migrating from SmartDraw to Evagene

If you currently use SmartDraw for pedigrees and want to move clinically relevant cases to a clinical tool, the practical path is through image import. Export each pedigree from SmartDraw as PNG, PDF, or SVG — SmartDraw handles all three well — and import into Evagene using pedigree image OCR. The OCR engine extracts family structure (individuals, relationships, affected status where visually encoded) and lets you finish annotation with structured disease codes, dates, and clinical notes. A typical five-to-seven-generation pedigree takes a few minutes to bring across and annotate.

For pedigrees that originated as GEDCOM files before landing in SmartDraw, Evagene imports GEDCOM 5.5.1 directly, preserving the full family structure without an OCR pass. JSON and 23andMe imports are also supported for cases where the family history lives in one of those formats.

You do not need to move everything. A reasonable pattern is to keep using SmartDraw for casual or non-clinical pedigrees, and bring across the subset that is clinically relevant. The two tools are not mutually exclusive.

Frequently asked questions

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• Clinical genetics pedigree tools: a field guide
• Pedigree drawing software overview